Skip MatMulAdd reshaping for zero-sized dimensions (#33766)
### Description
MatMulAddFusion inserts reshapes when converting non-matrix MatMul
inputs to Gemm. For an input such as `[2, 0, 4]`, its `[0, 4]` reshape
target copies the first input dimension instead of preserving the zero
extent, so a valid empty MatMul + Add fails during execution.
Skip the reshape-based fusion when the flattened row count, reduction
dimension, or output column count is zero. Ordinary nonempty fusion and
the rank-2 path are unchanged.
The regression tests cover zero M/K/N, rank-1/3/4 inputs, and opsets
7/13/14/18, with nonempty controls that still fuse.
### Motivation and Context
Fixes #33245.
Validation on Windows x64, Release CPU build:
- The empty-dimension regression fails before the fix and passes after
it; nonempty controls pass in both versions.
- All 35 MatMulAddFusion/ReshapeFusion tests pass.
- GraphTransformationTests: 453 passed, 33 skipped, one failure in
`SimplifiedLayerNormFusionPreservesIntegerToFloatCastEpsilon`, also
reproduced on the unmodified base commit `b5fe413d`.
- Lintrunner and `git diff --check` pass.
