[NFC][mlir][mesh,shard] Fixing misnomers in mesh dialect, renaming 'mesh' dialect to 'shard' (#150177)
Dialect to 'shard' (discourse 87053)
- dialect name mesh -> shard
- (device) mesh -> (device) grid
- spmdize -> partition
A lot of diffs, but simple renames only.
@tkarna @yaochengji