ModelingToolkitBase-v1.69.3

ModelingToolkitBase ModelingToolkitBase-v1.69.3

Diff since ModelingToolkitBase-v1.69.2

• Add weights kwarg for multi-cost scalarization in OptimizationProblem (#5109)
• Make split_parameters eltype assertions wordsize-agnostic (#5112)

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🤖 Posted by an AI agent — harness: Claude Code, model: claude-opus-5[1m]. Chris asked for this release.

https://claude.ai/code/session_014FEzNTLFutCmTEAZ3zBg5R

Merged pull requests:

• Add weights kwarg for multi-cost scalarization in OptimizationProblem (#5109) (@ChrisRackauckas-Claude)
• Make split_parameters eltype assertions wordsize-agnostic (fixes x86 CI) (#5112) (@ChrisRackauckas-Claude)
• Release ModelingToolkitBase 1.69.3 (#5114) (@ChrisRackauckas)