Allow iOS to clear the tintColor property.

[sleeper-seth]

By allowing the image color to be set to nil, it's possible to set and then unset a tint color.

This now matches the Android behavior defined in FastImageViewManager.java

FastImageViewManager

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 94.11%. Comparing base (534d70d) to head (a0ae994). Report is 99 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #586   +/-   ##
=======================================
  Coverage   94.11%   94.11%           
=======================================
  Files           1        1           
  Lines          17       17           
=======================================
  Hits           16       16           
  Misses          1        1           

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[eminsr]

This doesn't really works. It removes the tintColor but image still has a black tintColor for some reason.

[Noitham]

There are still issues with thetintColor on iOS devices, the value is not cleared, so if switching on/off, the value stacks up.