[flakybot] Increase threshold for number of jobs needed to make a fla…

…ky issue to 3 (#5488)

As in title, increase the number of jobs to count a test as flaky from 2
-> 3

Not sure if I like this but there are a ton of issues being made and
this should reduce it a bit

torchci/pages/api/flaky-tests/disable.ts

@@ -81,7 +81,7 @@ export function filterOutPRFlakyTests(tests: FlakyTestData[]): FlakyTestData[] {
 
 export function filterThreshold(
   tests: FlakyTestData[],
-  threshold: number = 1
+  threshold: number = 2
 ): FlakyTestData[] {
   return tests.filter((test) => new Set(test.jobIds).size > threshold);
 }