Could `Base.rationalize` be made to work on symbolic expression?

[nasser1]

reference https://discourse.julialang.org/t/how-to-use-base-rationalize-on-whole-symbolic-expression/86748

Using 1.8

Base.rationalize(expr) gives an error on symbolic expression

using Symbolics
@syms x
expr=(0.014378665475956662 - 0.0645731363698366im)*((72 + 132x + 2262(x^4) + 6743(x^5) - 754(x^2) - 234(x^6) - 1641(x^3) - 9180(x^7) - 5400(x^8))^-1) + (-0.0995313498923154 + 0.07922575111068406im)*x*((72 + 132x + 2262(x^4) + 6743(x^5) - 754(x^2) - 234(x^6) - 1641(x^3) - 9180(x^7) - 5400(x^8))^-1)

Base.rationalize(expr)

gives

ERROR: MethodError: no method matching rationalize(::SymbolicUtils.Add{Number, Int64, Dict{Any, Number}, Nothing})
Closest candidates are:
  rationalize(::Type{T}, ::AbstractFloat; tol) where T<:Integer at rational.jl:217
  rationalize(::Type{T}, ::AbstractFloat, ::Real) where T<:Integer at rational.jl:157
  rationalize(::AbstractFloat; kvs...) at rational.jl:218
  ...
Stacktrace:
 [1] top-level scope
   @ REPL[16]:1

Could Base.rationalize be made to work on whole symbolic expression?