Improve Supported Versions table accessibility in `SECURITY.md`

[audrasjb]

In ​SECURITY.md, the list of supported versions uses emojis to indicate whether a branch is supported or not. For better accessibility, it would be nice to add some text to complete the image representation with a text.

I propose to just add "Yes" or "No" after the emoji so we have both a visual representation and a simple, clear text.

[audrasjb]

Note: This is a follow-up to a quick conversation with @peterwilsoncc on this PR: ​https://github.com/WordPress/wordpress-develop/pull/3692#pullrequestreview-1195408087

https://core.trac.wordpress.org/ticket/57222

This looks good to me.

In your experience do you know if emoji are problematic for screen readers? The question behind the question is will screen reader users hear the first row as "six point one point ex white check mark yes"?

If a simple "yes" will be better for accessibility, I am happy to just go with that.

Good question @peterwilsoncc :)
It seems that assistive technologies will restitute ✅ as "White Heavy Check Mark".
The recommendation is to avoid using emojis as a replacement for text.

But it's also recommended to place the textual information before the emoji…
Shouldn't we completely remove the emojis from this documentation?

Shouldn't we completely remove the emojis from this documentation?

Yeah, let's do that. It's unambiguously accessible.

@peterwilsoncc I replaced all emojis with plain text words. Really, I think it doesn't hurt :)

[peterwilsoncc]

In 54919:

Security: Improve accessibility of security policy.

Replace emoji indicators of support with "yes" and "no". This prevents "White Heavy Check Mark" indicating supported versions for screen-reader users.

Props audrasjb.
Fixes #57222.

Merged https://core.trac.wordpress.org/changeset/54919