Repurpose enableCompressingPipelineCacheInThreadPool For platforms with a higher blob cache limit, say 32MB, compressing the bigger pipeline cache data is better delegated to a background thread. This change repurposes this default disabled workaround as a feature for such platforms. This change also enables enableCompressingPipelineCacheInThreadPool for mesa venus driver. Bug: b/246683126 Test: apps runs normally and cts passing Change-Id: Ied1d9b3ee351f71abedeed04d21c700c1ad7cd18 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3997592 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>