Add SharedVariable.default_update graphs to debugprint

[brandonwillard]

This PR adds a print_default_updates option to debugprint that shows all the
SharedVariable.default_updates in a graph.

import aesara
import aesara.tensor as at


srng = at.random.RandomStream(903902)

a = at.vector("a")
mu = 2 * a
sigma = srng.invgamma(0.5, 0.5, name="sigma")
X_rv = srng.normal(mu, at.sqrt(sigma), name="X")

aesara.dprint(X_rv, print_default_updates=True)
# normal_rv{0, (0, 0), floatX, False}.1 [id A] 'X'
#  |RandomGeneratorSharedVariable(<Generator(PCG64) at 0x7F2A98FAED60>) [id B] <- [id A]
#  |TensorConstant{[]} [id C]
#  |TensorConstant{11} [id D]
#  |Elemwise{mul,no_inplace} [id E]
#  | |InplaceDimShuffle{x} [id F]
#  | | |TensorConstant{2} [id G]
#  | |a [id H]
#  |Elemwise{sqrt,no_inplace} [id I]
#    |invgamma_rv{0, (0, 0), floatX, False}.1 [id J] 'sigma'
#      |RandomGeneratorSharedVariable(<Generator(PCG64) at 0x7F2A98FAEBA0>) [id K] <- [id J]
#      |TensorConstant{[]} [id L]
#      |TensorConstant{11} [id M]
#      |TensorConstant{0.5} [id N]
#      |TensorConstant{0.5} [id O]
#
# Default updates:
#
# normal_rv{0, (0, 0), floatX, False}.0 [id A]
#  |RandomGeneratorSharedVariable(<Generator(PCG64) at 0x7F2A98FAED60>) [id B] <- [id A]
#  |TensorConstant{[]} [id C]
#  |TensorConstant{11} [id D]
#  |Elemwise{mul,no_inplace} [id E]
#  |Elemwise{sqrt,no_inplace} [id I]
#
# invgamma_rv{0, (0, 0), floatX, False}.0 [id J]
#  |RandomGeneratorSharedVariable(<Generator(PCG64) at 0x7F2A98FAEBA0>) [id K] <- [id J]
#  |TensorConstant{[]} [id L]
#  |TensorConstant{11} [id M]
#  |TensorConstant{0.5} [id N]
#  |TensorConstant{0.5} [id O]

[codecov]

Codecov Report

Merging #1412 (d0535e1) into main (b64cb85) will increase coverage by 0.03%.
The diff coverage is 86.42%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1412      +/-   ##
==========================================
+ Coverage   74.69%   74.72%   +0.03%     
==========================================
  Files         194      194              
  Lines       49730    49866     +136     
  Branches    10527    10549      +22     
==========================================
+ Hits        37145    37262     +117     
- Misses      10262    10274      +12     
- Partials     2323     2330       +7     

Impacted Files	Coverage Δ
aesara/tensor/rewriting/math.py	85.95% <80.95%> (-0.07%)	⬇️
aesara/scalar/math.py	85.00% <82.55%> (-0.30%)	⬇️
aesara/printing.py	51.48% <100.00%> (+1.07%)	⬆️
aesara/tensor/inplace.py	100.00% <100.00%> (ø)
aesara/tensor/math.py	90.42% <100.00%> (+0.03%)	⬆️
aesara/tensor/special.py	90.90% <100.00%> (+0.26%)	⬆️