av-embeds - AMP Articles to use parentPID instead of versionPID

[amoore108]

Resolves JIRA [number]

Overall changes

• Amends the AMP and externalEmbedUrl URLs for Optimo Articles av-embeds to use the parentPID value, rather than versionPID when requesting a media asset. The BFF can handle either the parentPID or versionPID, and in these cases using the parentPID should somewhat help resolve requests for media assets that no longer exist

Code changes

• Passes new parentPID param into AMP and external URL constructors, using this value for Optimo Articles only

Testing

1. Update this line to be https://web-cdn.api.bbci.co.uk -

   simorgh/src/app/components/MediaLoader/utils/urlConstructors.ts

   Line 8 in cbee84c

   const TEST_AMP_URL = 'https://web-cdn.test.api.bbci.co.uk';

2. Visit http://localhost.bbc.com:7080/news/articles/cde7ng85jwgo.amp?renderer_env=live
3. Confirm the media player renders and is playable
4. Visit legacy CPS page: http://localhost.bbc.com:7080/serbian/cyr/srbija-68707945.amp?renderer_env=live
5. Confirm the media player renders and is playable

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