[Fixes] Corrections and improvements for release May 2026

[tonhuisman]

Reported issues from #5534
Resolves #5508

Fixes and improvements:

• %iswifi% report status value instead of boolean
• Documentation for %iswifiap%
• Documentation for %isppp%
• Add usesTLS flag to Notification settings, and show in Plugins list when applicable
• Optimize set/get VariousBits2 functions (from [Settings] Convert some settings to bitfields, making available more future settings #5522)
• [Docs] Fix missing column in description for LoopTimerSetAndRun command
• [Dist] Update Espressif Flash Download tool to v3.9.10
• [Network] Allow network interfaces to be enabled on factory reset
• [Docs] [P180] Add docs for TCA9554 I/O Extender as used on Waveshare ESP32-S3-ETH-8DI-8RO (Forum)
• [P073] Fix build issue when using P073_DEBUG for builds with also BUILD_NO_DEBUG set
• [Build] uv: Activate Python environment PENV before installing missing requirements
• [C016] Remove Experimental label, clean up initialization
• [Network] Initially collapse the Statistics section of the page