Updates default Text font size to 24px

[mnmaita]

Objective

• The default font size is too small to be useful in examples or for debug text.
• Fixes Increase default font size #13587

Solution

• Updated the default font size value in TextStyle from 12px to 24px.
• Resorted to Text defaults in examples to use the default font size in most of them.

Testing

• WIP

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Migration Guide

• The default font size has been increased to 24px from 12px. Make sure you set the font to the appropriate values in places you were using Default text style.

[alice-i-cecile]

Much nicer for the examples! I've updated the PR description a bit to make it clearer and improve the migration guide.

[rparrett]

What a lovely diff.

(Non-blocking) There may be a few examples where FiraMono-Medium is manually specified and doesn't need to be.

There are a few that do need it because the help text uses glyphs beyond the limited set the default font contains. But I think a few may not.

In one case, I was able to use the default after swapping out unicode em-dashes for regular dashes. But some examples need "box drawing" glyphs.

[mnmaita]

What a lovely diff.

(Non-blocking) There may be a few examples where FiraMono-Medium is manually specified and doesn't need to be.

There are a few that do need it because the help text uses glyphs beyond the limited set the default font contains. But I think a few may not.

In one case, I was able to use the default after swapping out unicode em-dashes for regular dashes. But some examples need "box drawing" glyphs.

I could split this up into several PRs but figured out that it was going to be too much work and then we'd be testing every single example on a different PR (or something like that). ETOOMANYEXAMPLES 😅

I'll check those examples you mentioned and reduce code a bit more where possible, I like the idea.

[alice-i-cecile]

Ping me when you're done cleaning up and I'll validate it quick before merging :)

[mnmaita]

@alice-i-cecile finished with getting rid of the default font loading where appropriate. I did some extra cleanup in places where the default text color was used too.