Add invalid rule primary option message for false

[Mouvedia]

Which issue, if any, is this issue related to?

Closes #5091

see also #2027 #5221 #3516 #1953

Is there anything in the PR that needs further explanation?

check the message of the first commit
101f274#diff-ea40f7b7d9827960e2d8e1590b37c7490648acb555d8fe8c22d0c2328449c95fR64

[Mouvedia]

This line
for (const a of [actual].flat()) {
in validateOptions.js motivated the config change.
Don't squash the commits so that it can be reverted easily.

[Mouvedia]

@jeddy3 this line says

Validate a rule's options.

so it shouldn't be called to validate options of things that are not rules, correct?
i.e. validateDisableSettings calls validateOptions internally

For now Ill add exceptions for reportDescriptionlessDisables, reportNeedlessDisables and reportInvalidScopeDisables which all accept false as a primary option.

[ybiquitous]

@Mouvedia Thanks for creating the PR!

The 66cdca0 commit looks good to me. 👍🏼

Don't squash the commits so that it can be reverted easily.

We usually "squash and merge", so if you open a new PR including the commit above, I'll approve and merge it soon.

[Mouvedia]

@ybiquitous is

stylelint/lib/__tests__/fixtures/plugin-async.js

Line 10 in 060310c

possible: [true, false],

a problem?

[ybiquitous]

Ah, possible: [true, null] is less confusing. Can you fix it also, please?

[Mouvedia]

Ah, possible: [true, null] is less confusing.

Nop: Type 'boolean' is not assignable to type 'RuleOptionsPossible[]'.

Can you fix it also, please?

Yup.

[ybiquitous]

Thank you. LGTM! 👍🏼

[ybiquitous]

Changelog entry added:

• Added: invalid rule primary option message for false (#6250).