fixrule(a_text_purpose) to report against (map) both 4.1.2 Name, Role, Value and 2.4.4 Link Purpose (In Context) to match ACT

[philljenkins]

ACT rule c487ae: Link has non-empty accessible name

This rule is implemented by the Checker using the ruleID a_text_purpose:Pass_0,Fail_1 procedure. The implementation is partially consistent with the Link has non-empty accessible name WCAG 2 rule as reported results last updated 16 May 2023.

Although it correctly covers all 28 test cases, the Checker mapping reports different success criteria as failed from what is expected by the ACT rule. ACT expects both:
4.1.2 Name, Role, Value
2.4.4 Link Purpose (In Context)
while Checker ruleID a_text_purpose only reports against 2.4.4

rulesets: [{
id: [ "IBM_Accessibility", "WCAG_2_0", "WCAG_2_1"],
num: "2.4.4", // num: [ "2.4.4", "x.y.z" ] also allowed
level: eRulePolicy.VIOLATION,
toolkitLevel: eToolkitLevel.LEVEL_TWO
}],
act: "c487ae",

This issue is to update the mapping to the same SC's as ACT.

[marcjohlic]

Removed sprint and release info because this issue has not been triaged yet. Added to the ACT Issue Holder epic.

[marcjohlic]

Adding this to the R6.1 Rules epic rather than creating a new R6.1 ACT Issue epic for the two late ACT issues that were pulled in. Leaving the issue holder on these two issues for now as a reminder that they were ACT issues that were pulled in at the end of the release.

[shunguoy]

PR: #1899