[clang] [modules][test] Bump maximum size for embed-files-compressed.cpp for the sake of RISC-V (PR #111360)

[Alex Bradbury via cfe-commits]

asb wrote:

In terms of why it's larger on RISC-V and has got bigger, I don't know enough about C++ modules to investigate much. `-module-file-info` wasn't very informative. The last commit that bumped up the maximum size was fa45f81ff7ea9fc2a2a40fea8dd7626ecc3a8dbb suggesting it may be increasing as new types are added to the RISC-V vector extension.

https://github.com/llvm/llvm-project/pull/111360