Add range flag settings to patterns files (#5570)

Where `--no-dump-sem-ir` is used, change to `--dump-sem-ir-ranges=only`.
Otherwise, add `--dump-sem-ir-ranges=if-present` with a TODO to change
to `only`.

Note, SemIR is affected just because the extra comments change line
numbers in files where splits aren't in use.

Author: jonmeow

toolchain/check/testdata/patterns/min_prelude/underscore.carbon

@@ -5,6 +5,8 @@
 // This is mostly checking against crashes for compile time bindings in
 // difficult contexts.
 //
+// TODO: Add ranges and switch to "--dump-sem-ir-ranges=only".
+// EXTRA-ARGS: --dump-sem-ir-ranges=if-present
 // INCLUDE-FILE: toolchain/testing/min_prelude/convert.carbon
 //
 // AUTOUPDATE