fix: LSDV-5544: Fix RichText tag in non-Chromium browsers

[Gondragos]

The fix #1516 broke RichText functionality under the flag fflag_feat_front_lsdv_4620_richtext_opimization_060423_short.
This PR should fix it.

PR fulfills these requirements

• Commit message(s) and PR title follows the format [fix|feat|ci|chore|doc]: TICKET-ID: Short description of change made ex. fix: DEV-XXXX: Removed inconsistent code usage causing intermittent errors
• Tests for the changes have been added/updated (for bug fixes/features)
• Docs have been added/updated (for bug fixes/features)
• Best efforts were made to ensure docs/code are concise and coherent (checked for spelling/grammatical errors, commented out code, debug logs etc.)
• Self-reviewed and ran all changes on a local instance (for bug fixes/features)

Change has impacts in these area(s)

(check all that apply)

• Product design
• Frontend

What libraries were added/updated?

N/A

Does this change affect performance?

Nope

Does this change affect security?

Nope

What alternative approaches were there?

N/A

What feature flags were used to cover this change?

fflag_feat_front_lsdv_4620_richtext_opimization_060423_short

Does this PR introduce a breaking change?

(check only one)

• Yes, and covered entirely by feature flag(s)
• Yes, and covered partially by feature flag(s)
• No
• Not sure (briefly explain the situation below)

What level of testing was included in the change?

(check all that apply)

• e2e
• integration
• unit

Which logical domain(s) does this change affect?

RichText

[codecov-commenter]

Codecov Report

Patch coverage: 75.00% and project coverage change: -0.01% ⚠️

Comparison is base (41ae765) 65.20% compared to head (da307c0) 65.20%.
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1540      +/-   ##
==========================================
- Coverage   65.20%   65.20%   -0.01%     
==========================================
  Files         442      442              
  Lines       28233    28230       -3     
  Branches     7377     7376       -1     
==========================================
- Hits        18410    18407       -3     
  Misses       9823     9823              

Files Changed	Coverage Δ
src/tags/object/AudioUltra/model.js	83.91% <ø> (ø)
src/tags/object/RichText/domManager.ts	89.09% <ø> (-0.03%)	⬇️
src/tags/visual/View.js	92.30% <ø> (ø)
src/utils/feature-flags.ts	100.00% <ø> (ø)
src/mixins/Visibility.js	77.77% <50.00%> (-0.61%)	⬇️
src/regions/Result.js	79.47% <100.00%> (ø)
src/tags/control/Choices.js	74.39% <100.00%> (ø)

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