Show more queries that are too long.

[greggman]

2 issues this solves

1. Show all the failures instead of only the first failure

   This was an issue because I'd fix the one failure only to later find there were worse cases. Just the worst case is also not enough.

2. Show a representation of each test

   The issue where is whatever is printing the Error message truncates the list so when I printed them all and there were more than about 20 because of so many permutations it would cut off the list, defeating the point of (1) above.

   So, opted to show one query per test of each length.

Example:

Before

Error: Generated test variant would produce too-long -actual.txt filename. Possible solutions:
 - Reduce the length of the parts of the test query
 - Reduce the parameterization of the test
 - Make the test function faster and regenerate the listing_meta entry
 - Reduce the specificity of test expectations (if you're using them) 
webgpu:shader,execution,expression,call,builtin,textureSampleGrad:sampled_3d_coords:stage="compute";format="astc-8x8-unorm-srgb";dim="cube";filt="linear";modeU="m";modeV="m";modeW="m";*

After

Error: Generated test variant would produce too-long -actual.txt filename. Possible solutions:
 - Reduce the length of the parts of the test query
 - Reduce the parameterization of the test
 - Make the test function faster and regenerate the listing_meta entry
 - Reduce the specificity of test expectations (if you're using them)
|<------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------>|
webgpu:shader,execution,expression,call,builtin,textureSampleGrad:sampled_3d_coords:stage="compute";format="astc-8x8-unorm-srgb";dim="cube";filt="linear";modeU="m";modeV="m";modeW="m";* 
webgpu:shader,execution,expression,call,builtin,textureSampleGrad:sampled_3d_coords:stage="compute";format="astc-12x12-unorm-srgb";dim="cube";filt="linear";modeU="m";modeV="m";modeW="m";* 
webgpu:shader,execution,expression,call,builtin,textureSampleGrad:sampled_3d_coords:stage="compute";format="astc-10x8-unorm-srgb";dim="cube";filt="linear";modeU="m";modeV="m";modeW="m";* 
webgpu:shader,execution,expression,call,builtin,textureSampleGrad:sampled_3d_coords:stage="fragment";format="astc-12x12-unorm-srgb";dim="cube";filt="nearest";modeU="m";modeV="m";modeW="m";* 
webgpu:shader,execution,expression,call,builtin,textureSampleGrad:sampled_3d_coords:stage="compute";format="astc-12x12-unorm-srgb";dim="cube";filt="nearest";modeU="m";modeV="m";modeW="m";* 
webgpu:shader,execution,expression,call,builtin,textureSampleGrad:sampled_array_2d_coords:stage="compute";format="astc-12x12-unorm-srgb";filt="linear";modeU="m";modeV="m";offset=false;* 
webgpu:shader,execution,expression,call,builtin,textureSampleGrad:sampled_array_2d_coords:stage="fragment";format="astc-12x12-unorm-srgb";filt="nearest";modeU="m";modeV="m";offset=false;* 
webgpu:shader,execution,expression,call,builtin,textureSampleGrad:sampled_array_2d_coords:stage="compute";format="astc-12x12-unorm-srgb";filt="nearest";modeU="m";modeV="m";offset=false;* 
webgpu:shader,execution,expression,call,builtin,textureSampleLevel:sampled_array_2d_coords:stage="fragment";format="astc-12x12-unorm-srgb";filt="nearest";modeU="m";modeV="m";offset=false 
webgpu:shader,execution,expression,call,builtin,textureSampleLevel:sampled_array_2d_coords:stage="compute";format="astc-12x12-unorm-srgb";filt="nearest";modeU="m";modeV="m";offset=false

[kainino0x]

Much nicer!