feat(rules): split button name rule into button only and button input rules

[scurker]

Split button-name into button-name and input-button-name rules.

• button-name rule should only include button and [role=button]
• input-button-name rule should only include inputs where type is button, reset, or submit.

For each rule, removed any checks that were no longer applicable to the targeted elements.

Closes: #1326

Reviewer checks

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• Follows the commit message policy, appropriate for next version
• Has documentation updated, a DU ticket, or requires no documentation change
• Includes new tests, or was unnecessary
• Code is reviewed for security by: @WilcoFiers

[straker]

LGTM but will need @WilcoFiers approval before we merge

[stephenmathieson]

Lacking context, but the code LGTM aside from a whitespace thing.

removed check