feat: Ignore invalid nodes

[marc2332]

Closes #588

[github-actions]

Benchmark for 3a8aade

Click to view benchmark

Test	Base	PR	%
benchmarks/alignments=true size=21845 depth=8 wide=4 mode=not cached	106.3±2.40ms	105.2±0.56ms	-1.03%
benchmarks/size=100001 depth=2 wide=100000 mode=not cached	23.2±1.05ms	23.2±1.16ms	0.00%
benchmarks/size=10001 depth=2 wide=10000 mode=not cached	1373.0±11.43µs	1385.2±13.18µs	+0.89%
benchmarks/size=1001 depth=2 wide=1000 mode=not cached	131.6±0.81µs	129.9±0.67µs	-1.29%
benchmarks/size=131071 depth=17 wide=2 mode=not cached	23.2±0.27ms	23.6±0.99ms	+1.72%
benchmarks/size=16383 depth=14 wide=2 mode=not cached	1635.3±6.11µs	1619.1±34.80µs	-0.99%
benchmarks/size=19531 depth=7 wide=5 mode=cached	312.9±9.18µs	311.6±7.87µs	-0.42%
benchmarks/size=19531 depth=7 wide=5 mode=not cached	2.5±0.01ms	2.5±0.01ms	0.00%
benchmarks/size=4095 depth=12 wide=2 mode=not cached	399.3±113.50µs	398.9±131.41µs	-0.10%
benchmarks/size=54241 depth=5 wide=15 mode=cached	253.2±18.75µs	270.8±20.73µs	+6.95%
benchmarks/size=54241 depth=5 wide=15 mode=not cached	6.2±0.06ms	6.1±0.13ms	-1.61%

[codecov]

Codecov Report

Attention: Patch coverage is 96.66667% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 73.25%. Comparing base (0ef6170) to head (49696f7).

Files	Patch %	Lines
crates/torin/src/measure.rs	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #589      +/-   ##
==========================================
+ Coverage   73.21%   73.25%   +0.03%     
==========================================
  Files         190      191       +1     
  Lines       19107    19126      +19     
==========================================
+ Hits        13990    14010      +20     
+ Misses       5117     5116       -1     

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