Do not use a hardcoded list of capabilities for firefox

[dubeyShivank]

Draft until we finalise the current release and then consider merging this into main

[changeset-bot[bot]]

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Latest commit: a89576cc8ffd4d2479934c556682f9bfa1135281

The changes in this PR will be included in the next version bump.

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| Name | Type | | -------------- | ----- | | @millicast/sdk | Patch |

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