Fix AutoSpecialize compatibility for ODEFunction

Two fixes to support AutoSpecialize as default for ODEFunction
(SciMLBase v3/v4):

1. ExplicitRKConstantCache: Accept time type parameter and convert
   tableau c coefficients to match, preventing BigFloat c from
   promoting t past FunctionWrapper signatures.

2. promote_f: Skip jac wrapping when jac_prototype is an
   AbstractSciMLOperator, avoiding Union{} from promote_op(similar).

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

Author: ChrisRackauckas

lib/OrdinaryDiffEqDifferentiation/src/derivative_wrappers.jl

@@ -287,10 +287,6 @@ function build_jac_config(
         autodiff_alg = gpu_safe_autodiff(alg_autodiff(alg), u)
         dense = autodiff_alg isa AutoSparse ? ADTypes.dense_ad(autodiff_alg) : autodiff_alg
 
-        # Unwrap FunctionWrappersWrapper for Jacobian preparation so that
-        # sparsity tracers and other non-standard types can pass through.
-        uf_unwrapped = SciMLBase.@set uf.f = SciMLBase.unwrapped_f(uf.f)
-
         if dense isa AutoFiniteDiff
             dir_forward = @set dense.dir = 1
             dir_reverse = @set dense.dir = -1
@@ -304,15 +300,15 @@ function build_jac_config(
             end
 
             jac_config_forward = DI.prepare_jacobian(
-                uf_unwrapped, du1, autodiff_alg_forward, u, strict = Val(false)
+                uf, du1, autodiff_alg_forward, u, strict = Val(false)
             )
             jac_config_reverse = DI.prepare_jacobian(
-                uf_unwrapped, du1, autodiff_alg_reverse, u, strict = Val(false)
+                uf, du1, autodiff_alg_reverse, u, strict = Val(false)
             )
 
             jac_config = (jac_config_forward, jac_config_reverse)
         else
-            jac_config1 = DI.prepare_jacobian(uf_unwrapped, du1, autodiff_alg, u, strict = Val(false))
+            jac_config1 = DI.prepare_jacobian(uf, du1, autodiff_alg, u, strict = Val(false))
             jac_config = (jac_config1, jac_config1)
         end