feat!: delete tui-palette.less (data-tui-background and data-tui-color states)

[nsbarsukov]

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)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

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

Does this PR introduce a breaking change?

• Yes
• No

[lumberjack-bot]

Pull request was closed ✔️

All saved screenshots (for current PR) were deleted 🗑️

[github-actions]

Visit the preview URL for this PR (updated for commit 41ad183):

https://taiga-ui--pr2473-remove-deprecations-6fn74zpd.web.app

_{(expires Sat, 27 Aug 2022 13:23:47 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

[codecov]

Codecov Report

Merging #2473 (41ad183) into v3.x (604fbf5) will increase coverage by 0.09%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             v3.x    #2473      +/-   ##
==========================================
+ Coverage   56.83%   56.92%   +0.09%     
==========================================
  Files         969      961       -8     
  Lines        9273     9239      -34     
  Branches     1884     1881       -3     
==========================================
- Hits         5270     5259      -11     
+ Misses       3597     3574      -23     
  Partials      406      406              

Flag	Coverage Δ
addon-charts	74.38% <ø> (ø)
addon-doc	19.16% <ø> (ø)
addon-editor	28.81% <100.00%> (ø)
addon-mobile	∅ <ø> (∅)
addon-table	83.78% <ø> (ø)
addon-tablebars	∅ <ø> (∅)
cdk	63.89% <ø> (ø)
core	63.10% <ø> (-0.02%)	⬇️
kit	61.36% <ø> (+0.29%)	⬆️
summary	56.92% <100.00%> (+0.09%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...it/components/input-count/input-count.component.ts	76.62% <ø> (ø)
...don-editor/extensions/default-editor-extensions.ts	100.00% <100.00%> (ø)
projects/addon-editor/extensions/indent-outdent.ts	20.00% <100.00%> (ø)
projects/kit/components/push/push.service.ts
projects/kit/components/push/push.component.ts
...ojects/kit/components/push/push-alert.directive.ts
projects/kit/components/push/push.directive.ts
projects/kit/components/push/push.module.ts
projects/kit/components/push/push.options.ts
...ojects/kit/components/push/push-alert.component.ts

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[waterplea]

Hopefully palette removal did not leave any unexpected issues :)

[well-done-bot]