MdeModulePkg: Update Brotli Compress to 1.2.0

# Description

Update brotli from v1.0.9 to v1.2.0
https://github.com/google/brotli/releases/tag/v1.2.0

- [ ] Breaking change?
  - **Breaking change** - Does this PR cause a
    break in build or boot behavior?
  - Examples: Does it add a new library class
    or move a module to a different repo.
- [x] Impacts security?
  - **Security** - Does this PR have a direct security impact?
  - Fixes CVE-2025-6176 reported in brotli < 1.2.0.
- [ ] Includes tests?
  - **Tests** - Does this PR include any explicit test code?
  - Examples: Unit tests or integration tests.

## How This Was Tested

Verified booting on a virtual platform by
compressing/decompressing PEI/DXE sections.

## Integration Instructions
NA

Signed-off-by: Vineel Kovvuri[MSFT] <[email protected]>

Author: vineelko

MdeModulePkg/Library/BrotliCustomDecompressLib/BrotliCustomDecompressLib.inf

@@ -49,7 +49,9 @@
   brotli/c/dec/bit_reader.c
   brotli/c/dec/decode.c
   brotli/c/dec/huffman.c
+  brotli/c/dec/prefix.c
   brotli/c/dec/state.c
+  brotli/c/dec/static_init.c
   brotli/c/include/brotli/decode.h
   brotli/c/include/brotli/port.h
   brotli/c/include/brotli/types.h

MdeModulePkg/Library/BrotliCustomDecompressLib/brotli

@@ -0,0 +1,9 @@
+/** @file
+  Include file to support building the third-party brotli.
+
+Copyright (c) Microsoft Corporation.
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <brotli/types.h>