(cherrypick) [Fizz][Float] Do not write after closing the stream (#27541) #31881
+88
−2
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Float methods can hang on to a reference to a Request after the request is closed due to AsyncLocalStorage. If a Float method is called at this point we do not want to attempt to flush anything. This change updates the closing logic to also call
stopFlowing
which will ensure that any checks against the destination properly reflect that we cannot do any writes. In addition it updates the enqueueFlush logic to existence check the destination inside the work function since it can change across the work scheduling gap if it is async.