fix: Recognizer only returns results once; not on second start ...

[nfreear]

...?

• Bug is present in Speech SDK version 1.14.0;
• NOT present in SDK version 1.13.1;
• Apparently will be fixed in next SDK release;
• SDK releases :~ https://github.com/microsoft/cognitive-services-speech-sdk-js/releases;
• Related bugs :~ microsoft/cognitive-services-speech-sdk-js#299; Azure-Samples/cognitive-services-speech-sdk#881;

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