Flaky audio provider tests

[swissspidy]

001 Scenario: Match an oEmbed provider # features/add-oembed-provider.feature:130
      Then the return code should be 0 # features/add-oembed-provider.feature:142
        $ wp embed provider match https://audio.com/audio-com/collections/ambient-focus
        
        Error: No oEmbed provider found for given URL.
        cwd: /tmp/wp-cli-test-run--698bf0335d1073.98861007/
        run time: 0.38755297660828
        exit status: 1 (RuntimeException)

002 Scenario: Discover a provider with limited response size                                     # features/add-oembed-provider.feature:198
      When I run `wp embed provider match https://audio.com/audio-com/collections/ambient-focus` # features/add-oembed-provider.feature:199
        $ wp embed provider match https://audio.com/audio-com/collections/ambient-focus
        
        Error: No oEmbed provider found for given URL.
        cwd: /tmp/wp-cli-test-run--698bf035387a76.64233588/
        run time: 0.39840817451477
        exit status: 1 (RuntimeException)

003 Scenario: Only match an oEmbed provider if discover # features/add-oembed-provider.feature:245
      Then the return code should be 0                  # features/add-oembed-provider.feature:256
        $ wp embed provider match https://audio.com/audio-com/collections/ambient-focus
        
        Error: No oEmbed provider found for given URL.
        cwd: /tmp/wp-cli-test-run--698bf035c7e016.36044166/
        run time: 0.37659192085266
        exit status: 1 (RuntimeException)

004 Scenario: Match an oEmbed provider # features/provider.feature:131
      Then the return code should be 0 # features/provider.feature:143
        $ wp embed provider match https://audio.com/audio-com/collections/ambient-focus
        
        Error: No oEmbed provider found for given URL.
        cwd: /tmp/wp-cli-test-run--698bf036b19877.74411875/
        run time: 0.48289489746094
        exit status: 1 (RuntimeException)

005 Scenario: Discover a provider with limited response size                                     # features/provider.feature:199
      When I run `wp embed provider match https://audio.com/audio-com/collections/ambient-focus` # features/provider.feature:200
        $ wp embed provider match https://audio.com/audio-com/collections/ambient-focus
        
        Error: No oEmbed provider found for given URL.
        cwd: /tmp/wp-cli-test-run--698bf037b5d8e1.11950562/
        run time: 0.39745402336121
        exit status: 1 (RuntimeException)

006 Scenario: Only match an oEmbed provider if discover # features/provider.feature:246
      Then the return code should be 0                  # features/provider.feature:257
        $ wp embed provider match https://audio.com/audio-com/collections/ambient-focus
        
        Error: No oEmbed provider found for given URL.
        cwd: /tmp/wp-cli-test-run--698bf038514275.81959407/
        run time: 0.34361886978149
        exit status: 1 (RuntimeException)

We should stabilize them and speed them up by using our request mocking util (Given that HTTP requests to ... will respond with)