fix: long accessibility label

[jleach]

Summary of Changes

The notifications accessibility label is overly long forcing the user to say "touch Notifications 5 notifications" to activate the tab. This reduces length and what people must speak to "Notifications (5)", now people must speak 'touch Notifications 5"

Related Issues

bcgov/bc-wallet-mobile#1640

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[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (e4c23aa) 61.48% compared to head (e56d1f3) 61.48%.

Files	Patch %	Lines
packages/legacy/core/App/navigators/TabStack.tsx	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1043   +/-   ##
=======================================
  Coverage   61.48%   61.48%           
=======================================
  Files         170      170           
  Lines        5450     5450           
  Branches     1570     1570           
=======================================
  Hits         3351     3351           
  Misses       2075     2075           
  Partials       24       24           

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