Added NavigateUp empty Check

[anandwana001]

Fixes #2817

@shobhitagarwal1612 PTAL?

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 61.35%. Comparing base (5f7c649) to head (6141fb4).
Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
...ain/java/com/google/android/ground/MainActivity.kt	0.00%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2823      +/-   ##
============================================
- Coverage     61.86%   61.35%   -0.51%     
- Complexity     1166     1169       +3     
============================================
  Files           265      266       +1     
  Lines          6243     6306      +63     
  Branches        882      900      +18     
============================================
+ Hits           3862     3869       +7     
- Misses         1854     1909      +55     
- Partials        527      528       +1     

Files with missing lines	Coverage Δ
...ain/java/com/google/android/ground/MainActivity.kt	47.31% <0.00%> (-1.04%)	⬇️

... and 3 files with indirect coverage changes