Fix rendering bug in formatted images using case expressions

[ryanhamley]

Launch Checklist

Fixes #10552

• briefly describe the changes in this PR
  This PR is a proposed fix for Using a case expression to determine an image name within formatted text causes a render bug if one of the image names isn't in the sprite #10552. Currently, we were setting bucket.iconsInText per feature/shaped text. This could lead to a situation in which iconsInText could flip from true to false and lead to a rendering bug when the wrong shader was selected. This fix ensures that if at least one feature in the bucket has icons mixed with text, the entire bucket will respect that and choose the correct shader.
• include before/after visuals or gifs if this PR includes visual changes

Before

After

• write tests for all new functionality
  TODO
• manually test the debug page
• tagged @mapbox/gl-native if this PR includes shader changes or needs a native port
• apply changelog label ('bug', 'feature', 'docs', etc) or use the label 'skip changelog'
• add an entry inside this element for inclusion in the mapbox-gl-js changelog: <changelog>Allow formatted images in text to use be displayed conditionally</changelog>

[alexshalamov]

looks good. Thanks!