Fixed filters activated status for map floating button

[gabriel-bolbotina]

Bug scenario:

• have filters from only one layer applied to the whole project
• reset/ clear the filters for only that layer via the filter banner Reset button

Actual result: the filters are cleared but the map floating button is still showing active filters, even though no filters are active

Expected result: when clearing a layer's filters and these are the only filters project wise, the map floating button should disappear and the status of the active filters be updated

Fix:

• created a function to check updates on the field filters member variable based on existing code
• Called this function at the end of clearLayersFilters to properly update the status and thus the floating button visibility

[github-actions]

📦 Build Artifacts Ready

OS	Status	Build	Info	Workflow run
macOS Build	❌	Build failed or not found.		#6725
linux Build	❌	Build failed or not found.		#6736
win64 Build	📬	Mergin Maps 59201 win64	Expires: 19/07/2026	#5920
Android Build	📬	Mergin Maps 803751 APK [arm64-v8a]	Expires: 19/07/2026	#8037
	📬	Mergin Maps 803751 APK [arm64-v8a]	Google Play Store	#8037
Android Build	📬	Mergin Maps 803711 APK [armeabi-v7a]	Expires: 19/07/2026	#8037
	📬	Mergin Maps 803711 APK [armeabi-v7a]	Google Play Store	#8037
iOS Build	📬		Build number: 26.04.897611	#8976