refactor!: remove deprecated core-enums, TuiColor, colorFallback, DEFAULT_COLORS, TuiColorHandler

[vladimirpotekhin]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows Conventional Commits
• Tests for the changes have been added (for bug fixes / features)
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PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Refactoring
• Code style update
• Build or CI related changes
• Documentation content changes

What is the current behavior?

Closes #

What is the new behavior?

Does this PR introduce a breaking change?

• Yes
• No

[lumberjack-bot]

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (v3.x@48b8aca). Click here to learn what that means.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             v3.x    #2158   +/-   ##
=======================================
  Coverage        ?   60.11%           
=======================================
  Files           ?      901           
  Lines           ?     9094           
  Branches        ?     1860           
=======================================
  Hits            ?     5467           
  Misses          ?     3197           
  Partials        ?      430           

Flag	Coverage Δ
addon-charts	74.02% <0.00%> (?)
addon-doc	20.47% <0.00%> (?)
addon-editor	53.92% <0.00%> (?)
addon-mobile	∅ <0.00%> (?)
addon-table	83.78% <0.00%> (?)
addon-tablebars	∅ <0.00%> (?)
cdk	65.43% <0.00%> (?)
core	66.50% <0.00%> (?)
kit	57.84% <0.00%> (?)
summary	60.11% <0.00%> (?)

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