Text Sets: make use of custom heading levels

[bmattb]

Bug Description

Originally reported by @BrittanyIRL
I added two of the same cover text sets and previewed, I have 0 h1s but 2 h2s. I think this is just because of how the text set was created?

Expected Behaviour

Steps to Reproduce

Screenshots

Additional Context

• Plugin Version:
• WordPress Version:
• Operating System:
• Browser:

[swissspidy]

H1s are only used if the font size is 36 or larger. The title here only has font size 31.

It's the only cover text set with such a font size.

We can consider lowering the threshold or simply forcing it to be an H1.

[BrittanyIRL]

H1s are only used if the font size is 36 or larger. The title here only has font size 31.
It's the only cover text set with such a font size.
We can consider lowering the threshold or simply forcing it to be an H1.

🤔 I think it's probably ok as is. I feel like if we were to force an h2 into being an h1 just because there was no h1 present it could be more of a hinderance - like, how to select the "right" h2. Knowing it's for 36 or larger clears up my confusion and for users who notice this, they'll understand.

[swissspidy]

Forcing/Defaulting to h1 also really only works when there's UI to override that again, which is not currently planned. So yeah, probably easiest to just leave this as-is and make sure it's documented.

[swissspidy]

Related: #11363

[felipebochehin87]

Tested using PR #12031.

1. Added multiple text elements to a blank canvas
2. Changed their position and confirmed that the Title 1 that is at the top of the page is the H1
3. Other texts meet the expected too
4. Used a template
5. Changed font size:
   H1: 36 or greater
   H2: 27-35
   H3: 21-26
   P: 8-20