fix(es/lexer): Use error when handling '\0' (#10964)

**Description:**

After introducing `Token::Eof`, we need to distinguish true eof (pos >= len) and '\0'. Both oxc and typescript throw errors on the latter.

**Related issue:**

 - Closes #10952

Author: CPunisher

.changeset/great-rivers-draw.md

@@ -0,0 +1,6 @@
+---
+swc_ecma_parser: patch
+swc_core: patch
+---
+
+fix: error when handling '\0'

crates/swc_ecma_parser/src/lexer/table.rs

@@ -19,7 +19,7 @@ pub(super) type ByteHandler = fn(&mut Lexer<'_>) -> LexResult<Token>;
 /// Lookup table mapping any incoming byte to a handler function defined below.
 pub(super) static BYTE_HANDLERS: [ByteHandler; 256] = [
     //   0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F   //
-    EOF, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, // 0
+    ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, // 0
     ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, // 1
     ERR, EXL, QOT, HSH, IDN, PRC, AMP, QOT, PNO, PNC, ATR, PLS, COM, MIN, PRD, SLH, // 2
     ZER, DIG, DIG, DIG, DIG, DIG, DIG, DIG, DIG, DIG, COL, SEM, LSS, EQL, MOR, QST, // 3
@@ -37,12 +37,6 @@ pub(super) static BYTE_HANDLERS: [ByteHandler; 256] = [
     UNI, UNI, UNI, UNI, UNI, UNI, UNI, UNI, UNI, UNI, UNI, UNI, UNI, UNI, UNI, UNI, // F
 ];
 
-const EOF: ByteHandler = |lexer| {
-    lexer.input.bump_bytes(1);
-
-    Ok(Token::Eof)
-};
-
 const ERR: ByteHandler = |lexer| {
     let c = unsafe {
         // Safety: Byte handler is only called for non-last chracters