refactor(profiling): fix memalloc error string formatting

[nsrip-dd]

The error format strings for memalloc aren't quite right. On my macbook,
running the memalloc tests fails like this:

>       with pytest.raises(ValueError, match="the heap sample size must be in range \\[0; 4294967295\\]"):
E       AssertionError: Regex pattern did not match.
E        Regex: 'the heap sample size must be in range \\[0; 4294967295\\]'
E        Input: 'the heap sample size must be in range [0; 18446744073709551615]'

The error format string in question uses the %lu format specifier to
print the sample size limit, which is currently UINT32_MAX.

Use %u instead, which is correct for the platforms we support. We could
also use PRIu32 from inttypes.h, but on Windows that expands to I32u,
while the Python Unicode formatting routines want POSIX-style
specifiers.

Checklist

• PR author has checked that all the criteria below are met
• The PR description includes an overview of the change
• The PR description articulates the motivation for the change
• The change includes tests OR the PR description describes a testing strategy
• The PR description notes risks associated with the change, if any
• Newly-added code is easy to change
• The change follows the library release note guidelines
• The change includes or references documentation updates if necessary
• Backport labels are set (if applicable)

Reviewer Checklist

• Reviewer has checked that all the criteria below are met
• Title is accurate
• All changes are related to the pull request's stated goal
• Avoids breaking API changes
• Testing strategy adequately addresses listed risks
• Newly-added code is easy to change
• Release note makes sense to a user of the library
• If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment
• Backport labels are set in a manner that is consistent with the release branch maintenance policy

[github-actions]

CODEOWNERS have been resolved as:

ddtrace/profiling/collector/_memalloc.c                                 @DataDog/profiling-python

[github-actions]

Bootstrap import analysis

Comparison of import times between this PR and base.

Summary

The average import time from this PR is: 234 ± 4 ms.

The average import time from base is: 237 ± 6 ms.

The import time difference between this PR and base is: -2.2 ± 0.2 ms.

Import time breakdown

The following import paths have shrunk:

ddtrace.auto 1.946 ms (0.83%)

ddtrace.bootstrap.sitecustomize 1.288 ms (0.55%)

ddtrace.bootstrap.preload 1.288 ms (0.55%)

ddtrace.internal.products 1.288 ms (0.55%)

ddtrace.internal.remoteconfig.client 0.639 ms (0.27%)

ddtrace 0.658 ms (0.28%)

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-04-01 15:02:02

Comparing candidate commit 816f750 in PR branch nick.ripley/portable-num-format-fix with baseline commit a98932f in branch main.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 498 metrics, 2 unstable metrics.