Allow documented dependency reexports in QA

[ChrisRackauckas-Claude]

Ignore this PR until it is reviewed by @ChrisRackauckas.

Summary

• Complete Document exported Catalyst APIs #1501's QA configuration by passing its existing DEPENDENCY_OWNED_PUBLIC_NAMES tuple to SciMLTesting's reexports_allow keyword.
• Keep the public-reexport audit enabled while explicitly scoping the intentional dependency facade names.

Root cause

#1501 upgraded the QA environment to SciMLTesting 2.x and introduced an exact tuple of dependency-owned public names for the API-documentation checks. SciMLTesting 2.x also enables its public-reexport audit by default, but that same tuple was not passed to the audit, so the LTS/current/prerelease QA jobs rejected all 309 intentional facade reexports.

This does not set check_reexports = false and does not use a wildcard. Any future unapproved Catalyst-owned or dependency-owned reexport outside the computed tuple still fails the audit.

Validation

• GROUP=QA julia +1.10 --project=. -e 'using Pkg; Pkg.test()': 14 passed, 4 broken; package tests passed.
• GROUP=QA julia +1.12 --project=. -e 'using Pkg; Pkg.test()': 13 passed, 7 broken; package tests passed on 1.12.6.
• GROUP=QA julia +1.13 --project=. -e 'using Pkg; Pkg.test()': 13 passed, 6 broken; package tests passed on 1.13.0-rc1.
• Direct comparison with SciMLTesting.public_reexports(Catalyst): both sets contain 309 sorted, unique names; exact ordered equality is true with no missing or extra names.
• Runic 1.7: test/qa/qa.jl passes --check --diff.
• git diff --check: passed.

[ChrisRackauckas-Claude]

Post-hold hosted CI readback:

• PR Allow documented dependency reexports in QA #1520 was merged externally at head 77fa07c9 as merge commit f7164c27; it contains one commit and one one-line file change.
• All 23 checks are terminal: 19 passed, 4 failed, 0 pending.
• The two completed QA code lanes passed: Julia lts and Julia pre.
• The Julia 1 QA job ran for 1h20m52s and failed because the hosted runner lost communication; its log blob returns BlobNotFound. The exact head passed the same official QA group locally on Julia 1.12.6 (13 pass, 7 broken) as well as Julia 1.10.11 and 1.13.0-rc1.
• The remaining three failures are the clean-base-confirmed Modeling lanes: lts DSL Options is tracked by Modeling test group fails on current master #1502/Fix symbolic option parameter discovery #1503 and ModelingToolkit #4211/#4714; Julia 1/prerelease Conservation Laws is addressed by Activate corrected conservation-law tests #1512.

Thus the hosted lanes that reached the repaired public-reexport assertion passed, and no hosted failure points to this one-line QA fix.