Remove unused TYPE_CHECKING block and rename test class to BrailleTestCase

Co-authored-by: bact <128572+bact@users.noreply.github.com>

Author: Copilot

pythainlp/braille/core.py

@@ -6,14 +6,10 @@
 from __future__ import annotations
 
 import re
-from typing import TYPE_CHECKING
 
 from pythainlp.tokenize import word_tokenize
 from pythainlp.util import Trie
 
-if TYPE_CHECKING:
-    pass
-
 # Thai character to braille pattern mapping
 # Braille patterns are represented as dot numbers (1-8)
 # Following international braille standards

tests/core/test_braille.py

@@ -8,7 +8,7 @@
 from pythainlp.braille.core import Braille
 
 
-class TestCase(unittest.TestCase):
+class BrailleTestCase(unittest.TestCase):
     """Test Thai braille conversion."""
 
     def test_thai_word_braille(self) -> None: