Reland "Enable 5 Protected Audience and Fenced Frame features in Mode A/B"

This reverts commit b550c350a6ac01554b5d25c999d8d58b9389f289.

Reason for revert: Turned out to not be the cause of b/381980101 and
 b/381977849 as they continued after the revert, and look to be WPT
 cross-talk for which mitigations are already in progress (e.g.
 https://crrev.com/1388378)

Original change's description:
> Revert "Enable 5 Protected Audience and Fenced Frame features in Mode A/B"
>
> This reverts commit 7f52df769dac418870a2d2a8fcd3f7c1f114405b.
>
> Reason for revert: suspected culprit for b/381980101 and b/381977849
>
> Bug: 381980101, 381977849
>
> Original change's description:
> > Enable 5 Protected Audience and Fenced Frame features in Mode A/B
> >
> > With the end of the Chrome-facilitated testing period, enable these features
> > in Modes A and B to provide a more consistent developer experience and
> > decrease the need for feature detection:
> >  * PA Real Time Reporting
> >  * PA multi-bid support
> >  * PA deprecatedReplaceInURN via auction config
> >  * PA multiple bidding contexts optimization
> >  * FF allow cross-origin subframes to send reportEvent() beacons
> >
> > This was announced here:
> >  https://groups.google.com/a/chromium.org/g/blink-dev/c/WgGGPElrG9o
> >
> > Change-Id: I7d26fb1ea908837557bf60cc8762245c409d0160
> > Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6049396
> > Auto-Submit: Paul Jensen <[email protected]>
> > Reviewed-by: Shivani Sharma <[email protected]>
> > Reviewed-by: Nasko Oskov <[email protected]>
> > Commit-Queue: Nasko Oskov <[email protected]>
> > Reviewed-by: Maks Orlovich <[email protected]>
> > Reviewed-by: Kent Tamura <[email protected]>
> > Cr-Commit-Position: refs/heads/main@{#1390666}
>
> Change-Id: I4cf77749fb95b8de9cdc412c674f7edb9c481edd
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6062886
> Auto-Submit: Florian Jacky <[email protected]>
> Reviewed-by: Balazs Engedy <[email protected]>
> Bot-Commit: Rubber Stamper <[email protected]>
> Owners-Override: Florian Jacky <[email protected]>
> Commit-Queue: Balazs Engedy <[email protected]>
> Cr-Commit-Position: refs/heads/main@{#1390874}

Bug: 381980101, 381977849
Change-Id: Ia963eac7362df95567f48fd8c0a4c07127df73d2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6065414
Commit-Queue: Paul Jensen <[email protected]>
Reviewed-by: Alex Turner <[email protected]>
Owners-Override: Victor Tan <[email protected]>
Auto-Submit: Paul Jensen <[email protected]>
Reviewed-by: Victor Tan <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1391243}

Author: JensenPaul

fledge/tentative/generate-bid-browser-signals.https.window.js

@@ -33,6 +33,7 @@ subsetTest(promise_test, async test => {
     "adComponentsLimit": 40,
     "joinCount": 1,
     "bidCount": 0,
+    "multiBidLimit": 1,
     "prevWinsMs": []
   }
   let biddingLogicURL = createBiddingScriptURL(