Fix CI for OTP 26,28

Summary: As title. Re-add automatically trimmed whitespaces

Reviewed By: ilya-klyuchnikov, alanz, jcpetruzza

Differential Revision: D84914077

fbshipit-source-id: 7bbe76edd33745342d95ee3bda3071c991e755c3

Author: VLanvin

crates/elp/src/resources/test/eqwalizer_tests/check/pats-OTP-26.pretty

@@ -7,7 +7,7 @@ error: incompatible_types (See https://fb.me/eqwalizer_errors#incompatible_types
    │                 M.
 Expression has type:   #{a => 'ok'} | 'error'
 Context expected type: #{term() => term()}
-   │
+   │                 
 
 Because in the expression's type:
   Here the type is a union type with some valid candidates: #{a => 'ok'}

crates/elp/src/resources/test/eqwalizer_tests/check/pats-OTP-28.pretty

@@ -7,7 +7,7 @@ error: incompatible_types (See https://fb.me/eqwalizer_errors#incompatible_types
    │                 M.
 Expression has type:   #{a => 'ok'} | 'error'
 Context expected type: #{term() => term()}
-   │
+   │                 
 
 Because in the expression's type:
   Here the type is a union type with some valid candidates: #{a => 'ok'}