* feat(inset-modal): add dynamic component loading functionality for inset modal
* style(modal): moved border-radius to a variable, added an additional data binding activity in moved border-radius to a variable, added an additional data binding activity in an e2e test
* refactor(modal): refactor sass and remove some unnecessary stuff
* refactor(modal): migrate to Angular RC import syntax
Closes#5423
When in a headless environment RAF may not be defined so we need to return the polyfilled version rather than letting the undefined function be called.
Under certain circustances the number of DOM children is not the same than the number of options,
this causes an exception by access to undefined during iteration.
Use the mode instead of the sass variable to determine which color the
buttons in a toolbar should be based on the background color. Added
error messages when anything other than a color is passed and more
comments.
BREAKING CHANGES: ios mode `$toolbar-ios-button-color` now has a
default value of `color-contrast($colors-ios, $toolbar-ios-background,
ios)` which will evaluate to the primary color for light background
toolbars and white for dark background toolbars.
fixes#6364
BREAKING CHANGES:
`$bar-button-ios-color` has been renamed to `$toolbar-ios-button-color`
`$bar-button-ios-border-radius` has been renamed to
`$toolbar-ios-button-border-radius`
added variables for the toolbar ios title for easier styling:
```
$toolbar-ios-title-font-weight
$toolbar-ios-title-text-align
$toolbar-ios-title-text-color
```
references #6364
BREAKING CHANGES:
`$bar-button-wp-color` was renamed to `$toolbar-wp-button-color`
`$bar-button-wp-border-radius` was renamed to
`$toolbar-wp-button-border-radius`
Added `$toolbar-wp-title-text-color` for better control of the title
color
Removed `$toolbar-wp-button-color` from the default themes
references #6364
BREAKING CHANGES:
`$toolbar-md-button-color` no longer gets passed to the function that
sets the contrast color for toolbar buttons, but it can still be used
to set the default button color.
`$bar-button-md-color` was renamed to `$toolbar-md-button-color`
`$bar-button-md-border-radius` was renamed to
`$toolbar-md-button-border-radius`
references #6364
