Fix precompilation warnings

- Fix duplicate documentation warnings in OrdinaryDiffEqRosenbrock by replacing Base.@__doc__ with @doc macro
- Import recursivefill! in OrdinaryDiffEqCore to address missing import warning

These warnings were benign but created noise during package precompilation.

Author: ChrisRackauckas

lib/OrdinaryDiffEqCore/src/OrdinaryDiffEqCore.jl

@@ -39,7 +39,7 @@ import SciMLOperators: AbstractSciMLOperator, AbstractSciMLScalarOperator,
 
 using DiffEqBase: DEIntegrator
 
-import RecursiveArrayTools: chain, recursivecopy!, recursivecopy, recursive_bottom_eltype, recursive_unitless_bottom_eltype, recursive_unitless_eltype, copyat_or_push!, DiffEqArray
+import RecursiveArrayTools: chain, recursivecopy!, recursivecopy, recursive_bottom_eltype, recursive_unitless_bottom_eltype, recursive_unitless_eltype, copyat_or_push!, DiffEqArray, recursivefill!
 
 using SimpleUnPack: @unpack
 import RecursiveArrayTools

lib/OrdinaryDiffEqRosenbrock/src/algorithms.jl

@@ -123,8 +123,7 @@ for (Alg, desc) in [
     (:Rodas5Pr, ROSENBROCK_STEPL_DOCS[:Rodas5Pr])
 ]
     @eval begin
-        """$($desc)"""
-        Base.@__doc__ struct $Alg{CS, AD, F, P, FDT, ST, CJ, StepLimiter, StageLimiter} <:
+        @doc $desc struct $Alg{CS, AD, F, P, FDT, ST, CJ, StepLimiter, StageLimiter} <:
                OrdinaryDiffEqRosenbrockAdaptiveAlgorithm{CS, AD, FDT, ST, CJ}
             linsolve::F
             precs::P
@@ -243,8 +242,7 @@ for (Alg, desc) in [
     (:Ros4LStab, ROSENBROCK_DOCS[:Ros4LStab])
 ]
     @eval begin
-        """$($desc)"""
-        Base.@__doc__ struct $Alg{CS, AD, F, P, FDT, ST, CJ} <:
+        @doc $desc struct $Alg{CS, AD, F, P, FDT, ST, CJ} <:
                OrdinaryDiffEqRosenbrockAdaptiveAlgorithm{CS, AD, FDT, ST, CJ}
             linsolve::F
             precs::P