bug: Parsing fails when identifiers are split across lines

Did you check existing issues?

• I have read all the tree-sitter docs if it relates to using the parser
• I have searched the existing issues of tree-sitter-cpp

Tree-Sitter CLI Version, if relevant (output of tree-sitter --version)

No response

Describe the bug

When splitting identifiers across multiple lines tree-sitter fails to parse them, see the example code below. (As far as I know this is technically valid C++~)

Steps To Reproduce/Bad Parse Tree

1. Go to https://tree-sitter.github.io/tree-sitter/playground
2. Pase the sample code
3. Observe the "ERROR" node in the declaration [1, 0] - [9, 2]
   

Expected Behavior/Parse Tree

As far as I know this is valid C++ code and all three major compilers compile it without any warning, I would have expected tree-sitter being able to parse it.

Repro

// https://godbolt.org/z/z5Mjjhnq1

extern "C" {
static 
i\
n\
t 
FOO\
Ba\
r
=
3;

int qux();
int qux() {
    return FOOBar;
}
}

Start with the reproduced C++ example in the tree-sitter playground and compare its parse tree with the behavior of the compilers linked in the issue. Trace how the tree-sitter-cpp grammar handles identifiers split across escaped lines; done means the sample parses without an ERROR node.