remove classes from combine function

[JeffGreiner-eaton]

Fixes https://github.com/etn-ccis/blui-react-component-library/issues/216. Fixes https://github.com/etn-ccis/blui-react-component-library/issues/860.

Changes proposed in this Pull Request:

• remove classes.xxx on all combined classes
• rename defaultClasses to generatedClasses
• update components where combine not needed

Screenshots / Screen Recording (if applicable)

• New

• Old

To Test:

• git checkout bug/blui-5304-duplicated-classes
• yarn start:showcase
• open dev tools
• inspect alarms nav item
• verify BluiDrawerNavItem-title & BluiDrawerNavItem-nestedTitle are not duplicated.
• navigate to file demos/showcase/src/pages/contextual-page-templates/Dashboard.tsx
• after line 182 channelValue add classes={{ value: 'MyTestClass' }} and save
• inspect channelValue
• verify MyTestClass is not duplicated
• test several other components and add custom classes

Any specific feedback you are looking for?

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 93.33333% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 83.76%. Comparing base (21fee0a) to head (af5fb9c).

Files	Patch %	Lines
components/src/core/Drawer/Drawer.tsx	66.66%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev #856 +/- ## ========================================== - Coverage 83.93% 83.76% -0.18% ========================================== Files 58 58 Lines 1239 1226 -13 Branches 159 154 -5 ========================================== - Hits 1040 1027 -13 Misses 100 100 Partials 99 99 ``` | [Flag](https://app.codecov.io/gh/etn-ccis/blui-react-component-library/pull/856/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=etn-ccis) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/etn-ccis/blui-react-component-library/pull/856/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=etn-ccis) | `83.76% <93.33%> (-0.18%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=etn-ccis#carryforward-flags-in-the-pull-request-comment) to find out more.

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[github-actions[bot]]

Visit the preview URL for this PR (updated for commit af5fb9c):

https://blui-react-docs--pr856-bug-blui-5304-duplic-1bu9rcfe.web.app

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[joebochill]

This would be a good rule to add in the eslint configuration to avoid the errors when we destructure but don't need to use a value (like classes):

 "@typescript-eslint/no-unused-vars": ["error", { "ignoreRestSiblings": true }]

[joebochill]

Something is broken with the Nav Items, they look funky:

[joebochill]

Suggest you take a look at this and consider enabling the react-hooks eslint plugin to help catch all of the missing dependency array entries: https://github.com/etn-ccis/blui-react-component-library/issues/860