build: enable lintlua for test/unit/ dir #26396

Problem:
Not all Lua code is checked by stylua. Automating code-style is an
important mechanism for reducing time spent on accidental
(non-essential) complexity.

Solution:
- Enable lintlua for `test/unit/` directory.
- TODO: only `test/functional/` remains unchecked.

previous: 45fe4d11ad
previous: 517f0cc634

CMakeLists.txt

@@ -233,7 +233,7 @@ add_glob_target(
   TARGET lintlua-stylua
   COMMAND ${STYLUA_PRG}
   FLAGS --color=always --check --respect-ignores
-  GLOB_DIRS runtime/ scripts/ src/
+  GLOB_DIRS runtime/ scripts/ src/ test/unit/
   GLOB_PAT *.lua
   TOUCH_STRATEGY SINGLE)
 
@@ -260,7 +260,7 @@ add_glob_target(
   TARGET formatlua
   COMMAND ${STYLUA_PRG}
   FLAGS --respect-ignores
-  GLOB_DIRS runtime/ scripts/ src/
+  GLOB_DIRS runtime/ scripts/ src/ test/unit/
   GLOB_PAT *.lua)
 
 add_custom_target(format)