chore(PPDSC-1852): replace enums

[baburay23]

PPDSC-1852

What

1. Background - why this is needed
2. What did you do
   replaced enums with union types for

ButtonSize
FlagSize
MenuItemAlign
MenuItemSize
LabelPosition
Flow
StackDistribution
AlignSelfValues
TabAlign
TabSize
TabsDistribution
TabsIndicatorPosition
TagSize
TextFieldSize

AudioEvents: there is a mapping used not sure how to achieve in union types
OverrideProp: same as above
EventTrigger: it's not easy to write a codemod script for this as EventTrigger is used differently.

4. What does the reviewers should expect

Just wanted to add some snapshots have been updated this is because I had to change the mapping from enums to an array so only the titles have changed. For menu.test.tsx it looks like there are changes however there are no visual changes because of the way tests are written the snapshots are out of place.
For each test i have written I have compared the it in https://text-compare.com/
so the previous test called Menu renders with menu items aligned at the end 1 is the exact same as the new test
Menu with align renders with menu items aligned at the end vertical 1
same with
before
Menu renders with menu items aligned at the start 2 and after Menu with align renders with menu items aligned at the start horizontal 1 are the same visually. Sorry just wanted to add this in as this threw me off originally.

I have done:

• Written unit tests against changes
• Written functional tests against the component and/or NewsKit site
• Updated relevant documentation

I have tested manually:

• The feature's functionality is working as expected on Chrome, Firefox, Safari and Edge
• The screen reader reads and flows through the elements as expected.
• There are no new errors in the browser console coming from this PR.
• When visual test is not added, it renders correctly on different browsers and mobile viewports (Safari, Firefox, small mobile viewport, tablet)
• The Playground feature is working as expected

Before:

After:

Who should review this PR:

How to test:

[newskit-engineering]

You can preview these changes on:
Documentation Site: http://ncu-newskit-docs.s3-website-eu-west-1.amazonaws.com/ppdsc-1852-replace-enums
Storybook: http://ncu-newskit-docs.s3-website-eu-west-1.amazonaws.com/ppdsc-1852-replace-enums/storybook

[mutebg]

That was huge, I did not realise how many files we need to change to replace these enums. Good job

[Xin00163]

This is definitely more than 3 points and you did a great job 👍 . One tiny comment.

[Xin00163]

Suggested change

	default="vertical"
	default="vertical-left"