Fix map screen system bar insets

[AvikMakwana]

Fixes #2170

Summary

• Apply system bar insets to the drawer app bar so toolbar navigation and action icons stay inside the safe drawing area in landscape.
• Recalculate map-screen margins and padding from original/base values to avoid accumulated padding after rotation or repeated inset dispatch.
• Apply safe-area padding to map controls including the layers FAB, my-location FAB, OSM compass, and OSM attribution.
• Pass viewport padding into both map implementations:
  • OSS/osmdroid adjusts MapView padding plus compass and attribution offsets.
  • GMS applies GoogleMap.setPadding(...).
• Make map-related bottom sheets inset-aware and scrollable so Monitoring Mode and Map Layers content stays visible above gesture and three-button navigation bars.
• Preserve existing XML/activity/map-fragment architecture.

Verification

Commands run:

• ./gradlew.bat app:ktfmtCheck
• ./gradlew.bat app:testOssDebugUnitTest
• ./gradlew.bat app:lintOssDebug
• ./gradlew.bat app:assembleOssDebug
• ./gradlew.bat app:assembleGmsDebug
• git diff --check

Manual verification on Motorola Edge 50 Fusion, ossDebug:

• PASS: Portrait + gesture navigation
• PASS: Portrait + three-button navigation
• PASS: Landscape + gesture navigation
• PASS: Landscape + three-button navigation
• PASS: Toolbar icons safe from side navigation bar
• PASS: Layers FAB safe from system bars
• PASS: My-location FAB safe from system bars
• PASS: OSM attribution visible
• PASS: Monitoring Mode sheet visible/scrollable
• PASS: Map Layers sheet visible/scrollable
• PASS: Rotation does not accumulate padding
• PASS: Navigation drawer behavior unchanged
• PASS: Map pan/zoom behavior unchanged

Notes:

• OSS behavior was manually verified on device.
• GMS was compile-checked with app:assembleGmsDebug.