Update DomainSets requirement from 0.6, 0.7 to 0.6, 0.7, 0.8 in the all-julia-packages group across 1 directory

[dependabot]

Updates the requirements on DomainSets to permit the latest version.
Updates DomainSets to 0.8.0

Release notes

Sourced from DomainSets's releases.

v0.8.0

DomainSets v0.8.0

Diff since v0.7.17

Breaking changes

• DomainSets.× and LinearAlgebra.× are now different functions (an old type piracy was removed)
• some internal symbols are no longer exported: see PR JuliaApproximation/DomainSets.jl#178 for details

How to upgrade your package

• First, check that your package works with DomainSets v0.7.17. With that version, you can cleanly replace "using DomainSets" by "using DomainSets, FunctionMaps". (Note that you should not do that with earlier versions in the v0.7 series.)
• apart from the breaking changes above, everything else should be compatible. Thus, with "using DomainSets, FunctionMaps", you should be able to specify the compat entry: DomainSets = "0.7.17,0.8"
• Please report any issues!

Merged pull requests:

• Start of 0.8 series (#178) (@​daanhb)

Commits

• See full diff in compare view

[dependabot]

Dependabot tried to update this pull request, but something went wrong. We're looking into it, but in the meantime you can retry the update by commenting @dependabot recreate.

[dependabot]

Dependabot tried to update this pull request, but something went wrong. We're looking into it, but in the meantime you can retry the update by commenting @dependabot recreate.

[ChrisRackauckas-Claude]

Status from local compat debugging:

• DomainSets 0.8 requires FunctionMaps; the PDESystemLibrary branch should add FunctionMaps as a direct dependency and import it alongside DomainSets.
• The current released MethodOfLines v0.11.13 still fails core MOL examples under the DomainSets 0.8 / MTK 11 stack with Initial condition underdefined for symbolic IC profiles (for example heat_1d1).
• This is fixed on MethodOfLines master by fix(discretization): fold symbolic initial conditions for MTK v1.45 compatibility MethodOfLines.jl#584 (cc49e9b, merged 2026-07-08), but that commit is not in a release yet. Latest MethodOfLines release is v0.11.13 from 2026-06-25.
• Verified locally: heat_1d1 with released MethodOfLines v0.11.13 still errors with missing (u(t))[2]...; the same targeted discretization with MethodOfLines master produces concrete u0 for inviscid_burgers_monotonic, heat_1d1, and a sinusoidal convection system.

So this PR should wait for a MethodOfLines release containing #584, then tighten/raise the MethodOfLines compat accordingly before merging.