Cta color content intro checkmarks

[nimithshetty17]

Issue

Fixes #MERATIVE-929 https://merative.atlassian.net/browse/MERATIVE-929

Description

Need to change the background color of our secondary CTA's when they're on a bone background. Block that is affected - Content Intro, with content-intro-checkmark style applied

Test URLs

• Before (Changes from main): https://main--merative2--hlxsites.hlx.page/campaigns/curam/missouri
• After (Changes from this PR): https://cta-color-content-intro-checkmarks--merative2--nimithshetty17.hlx.page/campaigns/curam/missouri

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[aem-code-sync[bot]]

Page	Scores	Audits	Google
/campaigns/curam/missouri

[aem-code-sync[bot]]

Page	Scores	Audits	Google
/campaigns/curam/missouri

[aem-code-sync[bot]]

Page	Scores	Audits	Google
/campaigns/curam/missouri

[aem-code-sync[bot]]

Page	Scores	Audits	Google
/campaigns/curam/missouri

[aem-code-sync[bot]]

Page	Scores	Audits	Google
/campaigns/curam/missouri