util: Fix shell kind in windows based on program path (#39696)

Closes #39614

The `ShellKind` struct is built on Windows' side, meaning that when
connecting to remotes, we fall back to PowerShell construction, even if
the shell program we are spawning is a unix program.

This broke tasks creation since we are using the shell kind to construct
args:


https://github.com/zed-industries/zed/blob/d04ac864b8cb78ee888ce03323e34c17a6dd16b9/crates/project/src/terminals.rs#L149

In normal terminals this only affected activation scripts (only place
where shell kind is used)

I don't have a Windows machine to test it, so I would appreciate any
help with testing!

Release Notes:

- Fixed an issue where tasks could not be executed in Windows WSL

---------

Signed-off-by: Marco Mihai Condrache <52580954+marcocondrache@users.noreply.github.com>

crates/terminal/src/terminal.rs

@@ -2391,8 +2391,8 @@ mod tests {
         cx.executor().allow_parking();
 
         let (completion_tx, completion_rx) = smol::channel::unbounded();
-        let (program, args) =
-            ShellBuilder::new(&Shell::System).build(Some("echo".to_owned()), &["hello".to_owned()]);
+        let (program, args) = ShellBuilder::new(&Shell::System, false)
+            .build(Some("echo".to_owned()), &["hello".to_owned()]);
         let terminal = cx.new(|cx| {
             TerminalBuilder::new(
                 None,
@@ -2510,7 +2510,7 @@ mod tests {
         cx.executor().allow_parking();
 
         let (completion_tx, completion_rx) = smol::channel::unbounded();
-        let (program, args) = ShellBuilder::new(&Shell::System)
+        let (program, args) = ShellBuilder::new(&Shell::System, false)
             .build(Some("asdasdasdasd".to_owned()), &["@@@@@".to_owned()]);
         let terminal = cx.new(|cx| {
             TerminalBuilder::new(