Fix a token incompatibility for Prism::Translation::Parser::Lexer

This PR fixes a token incompatibility between Parser gem and `Prism::Translation::Parser` for left parenthesis.

## Parser gem (Expected)

Returns `tLPAREN2` token:

```console
$ bundle exec ruby -Ilib -rparser/ruby33 \
-ve 'buf = Parser::Source::Buffer.new("example.rb"); buf.source = "foo(:bar)"; p Parser::Ruby33.new.tokenize(buf)[2]'
ruby 3.4.0dev (2024-09-01T11:00:13Z master eb144ef91e) [x86_64-darwin23]
[[:tIDENTIFIER, ["foo", #<Parser::Source::Range example.rb 0...3>]], [:tLPAREN2, ["(", #<Parser::Source::Range example.rb 3...4>]],
[:tSYMBOL, ["bar", #<Parser::Source::Range example.rb 4...8>]], [:tRPAREN, [")", #<Parser::Source::Range example.rb 8...9>]]]
```

## `Prism::Translation::Parser` (Actual)

Previously, the parser returned `tLPAREN` token when parsing the following:

```console
$ bundle exec ruby -Ilib -rprism -rprism/translation/parser33 -ve \
'buf = Parser::Source::Buffer.new("example.rb"); buf.source = "foo(:bar)"; p Prism::Translation::Parser33.new.tokenize(buf)[2]'
ruby 3.4.0dev (2024-09-01T11:00:13Z master eb144ef91e) [x86_64-darwin23]
[[:tIDENTIFIER, ["foo", #<Parser::Source::Range example.rb 0...3>]], [:tLPAREN, ["(", #<Parser::Source::Range example.rb 3...4>]],
[:tSYMBOL, ["bar", #<Parser::Source::Range example.rb 4...8>]], [:tRPAREN, [")", #<Parser::Source::Range example.rb 8...9>]]]
```

After the update, the parser now returns `tLPAREN2` token for the same input:

```console
$ bundle exec ruby -Ilib -rprism -rprism/translation/parser33 -ve \
'buf = Parser::Source::Buffer.new("example.rb"); buf.source = "foo(:bar)"; p Prism::Translation::Parser33.new.tokenize(buf)[2]'
ruby 3.4.0dev (2024-09-01T11:00:13Z master eb144ef91e) [x86_64-darwin23]
[[:tIDENTIFIER, ["foo", #<Parser::Source::Range example.rb 0...3>]], [:tLPAREN2, ["(", #<Parser::Source::Range example.rb 3...4>]],
[:tSYMBOL, ["bar", #<Parser::Source::Range example.rb 4...8>]], [:tRPAREN, [")", #<Parser::Source::Range example.rb 8...9>]]]
```

The `PARENTHESIS_LEFT` token in Prism is classified as either `tLPAREN` or `tLPAREN2` in the Parser gem.
The tokens that were previously all classified as `tLPAREN` are now also classified to `tLPAREN2`.

With this change, the following code could be removed from `test/prism/ruby/parser_test.rb`:

```diff
-          when :tLPAREN
-            actual_token[0] = expected_token[0] if expected_token[0] == :tLPAREN2
```

lib/prism/translation/parser/lexer.rb

@@ -134,7 +134,7 @@ class Lexer
           MINUS_GREATER: :tLAMBDA,
           NEWLINE: :tNL,
           NUMBERED_REFERENCE: :tNTH_REF,
-          PARENTHESIS_LEFT: :tLPAREN,
+          PARENTHESIS_LEFT: :tLPAREN2,
           PARENTHESIS_LEFT_PARENTHESES: :tLPAREN_ARG,
           PARENTHESIS_RIGHT: :tRPAREN,
           PERCENT: :tPERCENT,
@@ -187,7 +187,14 @@ class Lexer
         EXPR_BEG = 0x1 # :nodoc:
         EXPR_LABEL = 0x400 # :nodoc:
 
-        private_constant :TYPES, :EXPR_BEG, :EXPR_LABEL
+        # The `PARENTHESIS_LEFT` token in Prism is classified as either `tLPAREN` or `tLPAREN2` in the Parser gem.
+        # The following token types are listed as those classified as `tLPAREN`.
+        LPAREN_CONVERSION_TOKEN_TYPES = [
+          :kBREAK, :kCASE, :tDIVIDE, :kFOR, :kIF, :kNEXT, :kRETURN, :kUNTIL, :kWHILE, :tAMPER, :tANDOP, :tBANG, :tCOMMA, :tDOT2, :tDOT3,
+          :tEQL, :tLPAREN, :tLPAREN2, :tLSHFT, :tNL, :tOP_ASGN, :tOROP, :tPIPE, :tSEMI, :tSTRING_DBEG, :tUMINUS, :tUPLUS
+        ]
+
+        private_constant :TYPES, :EXPR_BEG, :EXPR_LABEL, :LPAREN_CONVERSION_TOKEN_TYPES
 
         # The Parser::Source::Buffer that the tokens were lexed from.
         attr_reader :source_buffer
@@ -268,6 +275,8 @@ def to_a
               value.chomp!(":")
             when :tLCURLY
               type = :tLBRACE if state == EXPR_BEG | EXPR_LABEL
+            when :tLPAREN2
+              type = :tLPAREN if !tokens.last || LPAREN_CONVERSION_TOKEN_TYPES.include?(tokens.last[0])
             when :tNTH_REF
               value = parse_integer(value.delete_prefix("$"))
             when :tOP_ASGN

test/prism/fixtures/unparser/corpus/literal/unary.txt

@@ -6,3 +6,4 @@
 -a
 +a
 -(-a).foo
++(+a).foo

test/prism/ruby/parser_test.rb

@@ -271,8 +271,6 @@ def assert_equal_tokens(expected_tokens, actual_tokens)
           case actual_token[0]
           when :kDO
             actual_token[0] = expected_token[0] if %i[kDO_BLOCK kDO_LAMBDA].include?(expected_token[0])
-          when :tLPAREN
-            actual_token[0] = expected_token[0] if expected_token[0] == :tLPAREN2
           when :tPOW
             actual_token[0] = expected_token[0] if expected_token[0] == :tDSTAR
           end