refactor(*): bundle styles with components

[simeonoff]

Closes #13770, #16794

Additional information (check all that apply):

• Bug fix
• New functionality
• Documentation
• Demos
• CI/CD

Checklist:

• All relevant tags have been applied to this PR
• This PR includes unit tests covering all the new code (test guidelines)
• This PR includes API docs for newly added methods/properties (api docs guidelines)
• This PR includes feature/README.MD updates for the feature docs
• This PR includes general feature table updates in the root README.MD
• This PR includes CHANGELOG.MD updates for newly added functionality
• This PR contains breaking changes
• This PR includes ng update migrations for the breaking changes (migrations guidelines)
• This PR includes behavioral changes and the feature specification has been updated with them

[mddragnev]

I`ve found two issues in the pivot data selector:

1. If you start the pivot grid dev sample (name is Pivot Grid) and add height:100% to the host styles and height:100% to the .pivot-container in the pivot-grid.sample.scss so you have the following:

:host {
    display: flex;
    flex-direction: column;
    height: 100%;
}
.pivot-container {
    display: flex;
    align-items: flex-start;
    flex: 1 1 auto;
    order: 0;
    align-items: stretch;
    height: 100%;
}

Then you can observe the scrollbar of the first list with the dimensions. It looks like this in master:

And it looks like this in the current branch:

You can see that the scrollbar size is not correct. Additonally, if you scroll the list to the bottom it looks like the scrollbar magically becomes smaller.

2. On the same sample with the same configuration you can see the labels of each section is missaligned because of some margin of the h6 element

[viktorkombov]

When hovering over the Excel-style filtering icon, the cursor does not change to a pointer:

[simeonoff]

When hovering over the Excel-style filtering icon, the cursor does not change to a pointer:

Should be fixed with the last commit.

[viktorkombov]

The select dropdown does not expand to the full width of the select.