TPath.IsPathRooted fails with absolute paths on Linux
## Summary
TPath.IsPathRooted is using PathSeparator instead of PathDelim.
https://gitlab.com/freepascal.org/fpc/source/-/blob/main/packages/vcl-compat/src/system.ioutils.pp#L1539
## System Information
- **Operating system:** Linux Ubuntu 24.04
- **Processor architecture:** x86-64
- **Compiler version:** branch main
- **Device:** Computer
## Steps to reproduce
TPath.IsPathRooted('/mnt/disk-01');
## What is the current bug behavior?
Returns false for absolute paths.
## What is the expected (correct) behavior?
Returns true.
## Relevant logs and/or screenshots
```
// Current code
class function TPath.IsPathRooted(const aPath: string): Boolean;
begin
Result:=aPath.StartsWith(PathSeparator) or TPath.IsDriveRooted(aPath);
end;
```
## Possible fixes
```
// Suggested fix
class function TPath.IsPathRooted(const aPath: string): Boolean;
begin
Result:=aPath.StartsWith(PathDelim) or TPath.IsDriveRooted(aPath);
end;
```
issue