Revert "[FPF] remove localhost restriction for render host"

This reverts commit f13dae76b6fc2a38e1c93637eb54594ef81680ba.

Reason for revert: performance regression found, revert while
investigating.

Original change's description:
> [FPF] remove localhost restriction for render host
>
> Bug: 386089639
> Change-Id: I0cb80acae26f1a76db7b5ddbea4a6c2815e121ee
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6173186
> Commit-Queue: Patricia Rock <trishalfonso@google.com>
> Reviewed-by: Martin Verde <thesalsa@google.com>
> Cr-Commit-Position: refs/heads/main@{#1414124}

Bug: 386089639, 394145571
Change-Id: Ia9802f806089119fb691ddba64498557df3e7aa4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6235904
Reviewed-by: Martin Verde <thesalsa@google.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Patricia Rock <trishalfonso@google.com>
Cr-Commit-Position: refs/heads/main@{#1416976}