Fixes for the layer legend

[uclaros]

Adjust the legend text size, color and margins.

Before	After

[github-actions]

📦 Build Artifacts Ready

OS	Status	Build	Info	Workflow run
macOS Build	📬	Mergin Maps 68031 dmg	Expires: 28/07/2026	#6803
linux Build	❌	Build failed or not found.		#6814
win64 Build	📬	Mergin Maps 59981 win64	Expires: 28/07/2026	#5998
Android Build	📬	Mergin Maps 811511 APK [armeabi-v7a]	Expires: 28/07/2026	#8115
	📬	Mergin Maps 811511 APK [armeabi-v7a]	Google Play Store	#8115
Android Build	📬	Mergin Maps 811551 APK [arm64-v8a]	Expires: 28/07/2026	#8115
	📬	Mergin Maps 811551 APK [arm64-v8a]	Google Play Store	#8115
iOS Build	❌	Build failed or not found.		#9054

[github-actions]

Coverage Report for CI Build 25502822581

Coverage decreased (-0.07%) to 57.854%

Details

• Coverage decreased (-0.07%) from the base build.
• Patch coverage: No coverable lines changed in this PR.
• 49 coverage regressions across 5 files.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

49 previously-covered lines in 5 files lost coverage.

File	Lines Losing Coverage	Coverage
mm/app/layer/layerdetaildata.cpp	23	60.38%
mm/core/merginapi.cpp	13	75.07%
mm/core/merginuserauth.cpp	9	68.24%
mm/app/layer/layerdetaillegendimageprovider.cpp	3	81.58%
mm/app/position/providers/simulatedpositionprovider.cpp	1	91.67%

---

Coverage Stats

Relevant Lines:	15240
Covered Lines:	8817
Line Coverage:	57.85%
Coverage Strength:	99.68 hits per line

---

💛 - Coveralls

[github-actions]

📦 Build Artifacts Ready

OS	Status	Build	Info	Workflow run
macOS Build	📬	Mergin Maps 68211 dmg	Expires: 05/08/2026	#6821
linux Build	📬	Mergin Maps 68381 x86_64	Expires: 05/08/2026	#6838
win64 Build	📬	Mergin Maps 60141 win64	Expires: 05/08/2026	#6014
Android Build	📬	Mergin Maps 813151 APK [arm64-v8a]	Expires: 05/08/2026	#8131
	📬	Mergin Maps 813151 APK [arm64-v8a]	Google Play Store	#8131
Android Build	📬	Mergin Maps 813111 APK [armeabi-v7a]	Expires: 05/08/2026	#8131
	📬	Mergin Maps 813111 APK [armeabi-v7a]	Google Play Store	#8131
iOS Build	❌	Build failed or not found.		#9073