[SD-278] RTL accordion heading

[waitingallday]

Issue: https://digital-vic.atlassian.net/browse/SD-278

What I did

• Right align title text in RTL accordion headings
• Also patched another parse5 sourcemap to suppress dev mode runtime warning

Current state

Corrected

How to test

• Cypress (updated RTL fixture with line breaking heading)

Checklist

For all PR's

• I've added relevant changes to the project Readme if needed.
• I've updated the documentation site as needed.
• I have added unit tests to cover my changes (if not applicable, please state why in a comment)

For new components only

• I have added a story covering all variants
• I have checked a11y tab in storybook passes
• Any events are emitted on the event bus

[netlify]

✅ Deploy Preview for ripple-docs canceled.

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🔨 Latest commit	4f76696
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[waitingallday]

🚨 will need to rebase this to release/2.16.0 when #1307 is merged into develop, and the new branch is up

[cypress]

ripple-framework    Run #2180

Run Properties:   Passed #2180  •  4f766964cd: fix(@dpc-sdp/ripple-ui-core): :bug: right align rtl accordion heading

Project	ripple-framework
Branch Review	task/sd-278-accordion-title-rtl
Run status	Passed #2180
Run duration	09m 56s
Commit	4f766964cd: fix(@dpc-sdp/ripple-ui-core): :bug: right align rtl accordion heading
Committer	Jason Smith
View all properties for this run ↗︎

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Test results
Failures	0
Flaky	0
Pending	0
Skipped	0
Passing	188
View all changes introduced in this branch ↗︎