Make Java detection resilient to unusuable installs

Previously, if any Java failed to run completely (rather than running
but exiting unsuccessfully) then spawnToResult would throw, so the
test would throw, so the whole check would fail. Now we just treat
errors like any other invalid exit.

Author: pimterry

src/interceptors/jvm.ts

@@ -35,6 +35,7 @@ const javaBinPromise: Promise<string | false> = (async () => {
     const javaTestResults = await Promise.all(javaBinPaths.map(async (possibleJavaBin) => ({
         javaBin: possibleJavaBin,
         output: await testJavaBin(possibleJavaBin)
+            .catch((e) => ({ exitCode: -1, stdout: '', stderr: e.toString() }))
     })))
 
     // Use the first Java in the list that succeeds: