Disable Blob partitioning until opaque origins fixed.

[goodov]

Blobs from opaque origins doesn't work well with partitioning right now. Need to fix this. Until then disable the feature.

brave/brave-browser#23171

[kjozwiak]

Reproduced the original issue using 1.41.33 Chromium: 102.0.5005.78 where blob partitioning was enabled using the STR/Cases outlined via brave/brave-browser#23171.

Verification PASSED on Win 11 x64 using the following build(s):

Brave | 1.39.111 Chromium: 102.0.5005.61 (Official Build) (64-bit)
-- | --
Revision | 0e59bcc00cc4985ce39ad31c150065f159d95ad3-refs/branch-heads/5005@{#819}
OS | Windows 11 Version 21H2 (Build 22000.675)

Quickly went through the following to ensure that we're disabling DisableBlobPartitioning:

• launched Brave twice so the client downloads the variation seed via the following
  • brave.exe --enable-logging=stderr --variations-server-url=https://variations.bravesoftware.com/seed
• ensured that DisableBlobPartitioning:Default
• ensured that I can download via https://material-foundation.github.io/material-theme-builder/#/custom

Example	Example

[kjozwiak]

Uplift into production approved 👍 QA has verified the change via #272 (comment).