fix: invalid endCharacter value in built in PHP validation provider

[zobo]

The build in PHP validation provider sets the Diagnostics Range endCharacter value to Number.MAX_VALUE. This ends up being translated to 1.7976931348623157e+308 in LSP communication with other LSs in the textDocument/codeActionrequest.

There was already a discussion and a fix for related issues: #80288 (comment)

Some parts of the codebase use Number.MAX_SAFE_INTEGER and one uses a hardcoded max 32 bit integer value:

vscode/src/vs/workbench/contrib/tasks/common/problemMatcher.ts

Line 450 in c05b497

return { startLineNumber: startLine, startCharacter: 1, endLineNumber: startLine, endCharacter: 2 ** 31 - 1 }; // See https://github.com/microsoft/vscode/issues/80288#issuecomment-650636442 for discussion

[roblourens]

Thank you!