Revert ODEFunction convenience constructors to FullSpecialize

Only reverts ODEFunction, SplitFunction, and DynamicalODEFunction
back to FullSpecialize. Other function types (NonlinearFunction,
SDEFunction, DiscreteFunction, etc.) keep DEFAULT_SPECIALIZATION
from #1298.

The ODEFunction change exposed multiple issues in OrdinaryDiffEq.jl:
- BigFloat tableau c promotes t past FunctionWrapper signatures
- GradientTracer types not in wrapper signatures (AutoSparse)
- MatrixOperator jac_prototype causes promote_op → Union{}
- Hard DAE numerical accuracy regression

Deferring ODEFunction AutoSpecialize default to v4.

Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: ChrisRackauckas

Project.toml

@@ -1,6 +1,6 @@
 name = "SciMLBase"
 uuid = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
-version = "2.153.0"
+version = "2.153.1"
 authors = ["Chris Rackauckas <accounts@chrisrackauckas.com> and contributors"]
 
 [deps]

src/scimlfunctions.jl

@@ -2896,10 +2896,10 @@ function ODEFunction{iip, specialize}(
 end
 
 function ODEFunction{iip}(f; kwargs...) where {iip}
-    return ODEFunction{iip, DEFAULT_SPECIALIZATION}(f; kwargs...)
+    return ODEFunction{iip, FullSpecialize}(f; kwargs...)
 end
 ODEFunction{iip}(f::ODEFunction; kwargs...) where {iip} = f
-ODEFunction(f; kwargs...) = ODEFunction{isinplace(f, 4), DEFAULT_SPECIALIZATION}(f; kwargs...)
+ODEFunction(f; kwargs...) = ODEFunction{isinplace(f, 4), FullSpecialize}(f; kwargs...)
 ODEFunction(f::ODEFunction; kwargs...) = f
 
 function unwrapped_f(f::ODEFunction, newf = unwrapped_f(f.f))
@@ -3206,7 +3206,7 @@ end
 
 SplitFunction(f1, f2; kwargs...) = SplitFunction{isinplace(f2, 4)}(f1, f2; kwargs...)
 function SplitFunction{iip}(f1, f2; kwargs...) where {iip}
-    return SplitFunction{iip, DEFAULT_SPECIALIZATION}(
+    return SplitFunction{iip, FullSpecialize}(
         ODEFunction(f1), ODEFunction{iip}(f2);
         kwargs...
     )
@@ -3313,7 +3313,7 @@ function DynamicalODEFunction(f1, f2 = nothing; kwargs...)
     return DynamicalODEFunction{isinplace(f1, 5)}(f1, f2; kwargs...)
 end
 function DynamicalODEFunction{iip}(f1, f2; kwargs...) where {iip}
-    return DynamicalODEFunction{iip, DEFAULT_SPECIALIZATION}(
+    return DynamicalODEFunction{iip, FullSpecialize}(
         ODEFunction{iip}(f1),
         ODEFunction{iip}(f2); kwargs...
     )