Issue#8261 : Added test cases for InfiniteStreamRecognize class

[abhasal]

Description

Fixes #8261

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Checklist

• I have followed Sample Format Guide
• pom.xml parent set to latest shared-configuration
• Appropriate changes to README are included in PR
• These samples need a new API enabled in testing projects to pass (let us know which ones)
• These samples need a new/updated env vars in testing projects set to pass (let us know which ones)
• Tests pass: mvn clean verify required
• Lint passes: mvn -P lint checkstyle:check required
• Static Analysis: mvn -P lint clean compile pmd:cpd-check spotbugs:check advisory only
• This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners for this sample
• This sample adds a new Product API, and I updated the Blunderbuss issue/PR auto-assigner with the codeowners for this sample
• [x ] Please merge this PR for me once it is approved

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[minherz]

what is an expected running time for this test?
based on lack of test input it looks like the code sample will wait for input and get terminated after 5 minutes.

[minherz]

nit: what is a reason to intercept Stderr if the test validates only Stdout?

[minherz]

I converted PR to draft because it does not pass automatic testing. Please, ensure that all tests pass before submitting it to the review.
It seems that the execution time of the test is bound by 5 min waiting for microphone input that is hard-coded in the code sample. If my interpretation is correct, the code sample and test should be modified to bring the running time of the test under 1 min.