Use heap dumps (type 2) instead of triage dumps for crash diagnostics (#19607)

Triage dumps (type 3) don't include the managed heap, making it
impossible to inspect exception messages and object state. Heap dumps
(type 2) include this data while still being much smaller than full
dumps (type 4).

Only produced on crash — no impact on passing builds.

Related: dotnet/sdk#53958

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: T-Gro

azure-pipelines-PR.yml

@@ -232,7 +232,7 @@ stages:
           - script: eng\CIBuildNoPublish.cmd -compressallmetadata -configuration Release /p:FSharpLangVersion=preview
             env:
               DOTNET_DbgEnableMiniDump: 1
-              DOTNET_DbgMiniDumpType: 3 # Triage dump, 1 for mini, 2 for Heap, 3 for triage, 4 for full. Don't use 4 unless you know what you're doing.
+              DOTNET_DbgMiniDumpType: 2 # 1=mini, 2=heap, 3=triage, 4=full. Heap dumps include managed object data for debugging.
               DOTNET_DbgMiniDumpName: $(Build.SourcesDirectory)\artifacts\log\Release\$(Build.BuildId)-%e-%p-%t.dmp
               NativeToolsOnMachine: true
             displayName: Build
@@ -268,7 +268,7 @@ stages:
           - script: eng\CIBuildNoPublish.cmd -compressallmetadata -buildnorealsig -testCoreclr -configuration Release
             env:
               DOTNET_DbgEnableMiniDump: 1
-              DOTNET_DbgMiniDumpType: 3 # Triage dump, 1 for mini, 2 for Heap, 3 for triage, 4 for full. Don't use 4 unless you know what you're doing.
+              DOTNET_DbgMiniDumpType: 2 # 1=mini, 2=heap, 3=triage, 4=full. Heap dumps include managed object data for debugging.
               DOTNET_DbgMiniDumpName: $(Build.SourcesDirectory)\artifacts\log\Release\$(Build.BuildId)-%e-%p-%t.dmp
               NativeToolsOnMachine: true
             displayName: Build
@@ -315,7 +315,7 @@ stages:
             env:
               FSharp_CacheEvictionImmediate: true
               DOTNET_DbgEnableMiniDump: 1
-              DOTNET_DbgMiniDumpType: 3 # Triage dump, 1 for mini, 2 for Heap, 3 for triage, 4 for full. Don't use 4 unless you know what you're doing.
+              DOTNET_DbgMiniDumpType: 2 # 1=mini, 2=heap, 3=triage, 4=full. Heap dumps include managed object data for debugging.
               DOTNET_DbgMiniDumpName: $(Build.SourcesDirectory)\artifacts\log\Release\$(Build.BuildId)-%e-%p-%t.dmp
               NativeToolsOnMachine: true
             displayName: Build
@@ -360,7 +360,7 @@ stages:
           - script: eng\CIBuildNoPublish.cmd -compressallmetadata -configuration Release /p:AdditionalFscCmdFlags=--strict-indentation+
             env:
               DOTNET_DbgEnableMiniDump: 1
-              DOTNET_DbgMiniDumpType: 3 # Triage dump, 1 for mini, 2 for Heap, 3 for triage, 4 for full. Don't use 4 unless you know what you're doing.
+              DOTNET_DbgMiniDumpType: 2 # 1=mini, 2=heap, 3=triage, 4=full. Heap dumps include managed object data for debugging.
               DOTNET_DbgMiniDumpName: $(Build.SourcesDirectory)\artifacts\log\Release\$(Build.BuildId)-%e-%p-%t.dmp
               NativeToolsOnMachine: true
             displayName: Build
@@ -396,7 +396,7 @@ stages:
           - script: eng\CIBuildNoPublish.cmd -compressallmetadata -configuration Release /p:AdditionalFscCmdFlags=--strict-indentation-
             env:
               DOTNET_DbgEnableMiniDump: 1
-              DOTNET_DbgMiniDumpType: 3 # Triage dump, 1 for mini, 2 for Heap, 3 for triage, 4 for full. Don't use 4 unless you know what you're doing.
+              DOTNET_DbgMiniDumpType: 2 # 1=mini, 2=heap, 3=triage, 4=full. Heap dumps include managed object data for debugging.
               DOTNET_DbgMiniDumpName: $(Build.SourcesDirectory)\artifacts\log\Release\$(Build.BuildId)-%e-%p-%t.dmp
               NativeToolsOnMachine: true
             displayName: Build
@@ -463,7 +463,7 @@ stages:
           - script: eng\CIBuildNoPublish.cmd -compressallmetadata -configuration $(_configuration) -$(_testKind)
             env:
               DOTNET_DbgEnableMiniDump: 1
-              DOTNET_DbgMiniDumpType: 3 # Triage dump, 1 for mini, 2 for Heap, 3 for triage, 4 for full. Don't use 4 unless you know what you're doing.
+              DOTNET_DbgMiniDumpType: 2 # 1=mini, 2=heap, 3=triage, 4=full. Heap dumps include managed object data for debugging.
               DOTNET_DbgMiniDumpName: $(Build.SourcesDirectory)\artifacts\log\$(_configuration)\$(Build.BuildId)-%e-%p-%t.dmp
               NativeToolsOnMachine: true
             displayName: Build and Test $(_testKind) $(transparentCompiler)
@@ -543,7 +543,7 @@ stages:
               buildEnv:
                 FSharp_CacheEvictionImmediate: true
                 DOTNET_DbgEnableMiniDump: 1
-                DOTNET_DbgMiniDumpType: 3
+                DOTNET_DbgMiniDumpType: 2
                 DOTNET_DbgMiniDumpName: $(Build.SourcesDirectory)\artifacts\log\Release\$(Build.BuildId)-%e-%p-%t.dmp
                 NativeToolsOnMachine: true
               testRunTitlePrefix: 'WindowsCompressedMetadata testDesktop'