Timeout in x32 burst_malloc test

[derekbruening]

A master merge hit a timeout in burst_malloc on x86_32:

https://github.com/DynamoRIO/dynamorio/actions/runs/26929650196

380: Running postcmd |/home/runner/work/dynamorio/dynamorio/build_debug-internal-32/clients/bin32/drmemtrace_launcher;-indir;/home/runner/work/dynamorio/dynamorio/build_debug-internal-32/suite/tests/drmemtrace.tool.drcacheoff.burst_malloc.34047.2347.dir;-tool;basic_counts|
      Test #380: code_api|tool.drcacheoff.burst_malloc ............................***Timeout  90.01 sec

[derekbruening]

Happened again: https://github.com/DynamoRIO/dynamorio/actions/runs/26929650196

[derekbruening]

Happened again: https://github.com/DynamoRIO/dynamorio/actions/runs/27158553217/job/80167649219?pr=7921

[derekbruening]

Again: https://github.com/DynamoRIO/dynamorio/actions/runs/27230681351/job/80409666646

[derekbruening]

On a local VM I'm seeing this set of tests consistently timeout (5 times in a row) with ctest -j 12 but not fail with ctest -j 2. Maybe it's the same as the x86_32 GA failure: just needs a longer timeout?

        370 - code_api|tool.drcacheoff.multiproc (Timeout)
        432 - code_api|tool.drcacheoff.burst_malloc (Timeout)
        434 - code_api|tool.drcacheoff.burst_threadfilter (Timeout)
        435 - code_api|tool.drcacheoff.burst_threadL0filter (Timeout)
        450 - code_api|tool.histogram.offline (Timeout)

[derekbruening]

Also:

        433 - code_api|tool.drcacheoff.burst_reattach (Timeout)
        459 - code_api|tool.record_filter_bycore_multi (Timeout)

[derekbruening]

Lumping these in here too as they sometimes fail on this machine (the 2 above are also not every time):

        363 - code_api|tool.drcacheoff.fork (Timeout)
        427 - code_api|tool.drcacheoff.scale_time (Timeout)

[derekbruening]

I'm going to increase the timeouts for all these and we'll wait a few weeks and see whether the GA 32-bit one is also fixed by this.