fix: swapped error message args, dead code after check=True, missing dotnet v9 (#1250)

1. ls_process.py: swapped values in error message — was reporting
   "read {expected} of {actual}" instead of "read {actual} of {expected}"

2. common.py: check=True made the returncode != 0 branch unreachable
   (CalledProcessError raised before it). Removed check=True so the
   warning logs execute before raising the exception explicitly.

3. ls_utils.py: dotnet version error message listed "4, 6, 7, 8" but
   the code also checks for version 9. Added 9 to the message.

src/solidlsp/language_servers/common.py

@@ -117,7 +117,7 @@ class RuntimeDependencyCollection:
         completed_process = subprocess.run(
             command,
             shell=True,
-            check=True,
+            check=False,
             cwd=cwd,
             stdout=subprocess.PIPE,
             stderr=subprocess.STDOUT,
@@ -126,10 +126,8 @@ class RuntimeDependencyCollection:
         if completed_process.returncode != 0:
             log.warning("Command '%s' failed with return code %d", command, completed_process.returncode)
             log.warning("Command output:\n%s", completed_process.stdout)
-        else:
-            log.info(
-                "Command completed successfully",
-            )
+            raise subprocess.CalledProcessError(completed_process.returncode, command, completed_process.stdout)
+        log.info("Command completed successfully")
 
     @staticmethod
     def _install_from_url(dep: RuntimeDependency, target_dir: str) -> None:

src/solidlsp/ls_process.py

@@ -321,7 +321,7 @@ class LanguageServerProcess:
             if not chunk:
                 if process.poll() is not None:
                     raise LanguageServerTerminatedException(
-                        f"Process terminated while trying to read response (read {num_bytes} of {len(data)} bytes before termination)",
+                        f"Process terminated while trying to read response (read {len(data)} of {num_bytes} bytes before termination)",
                         language=self.language,
                     )
                 # Process still running but no data available yet, retry after a short delay

src/solidlsp/ls_utils.py

@@ -549,7 +549,7 @@ class PlatformUtils:
 
             # If no supported version found, raise exception with all available versions
             raise SolidLSPException(
-                f"No supported dotnet version found. Available versions: {', '.join(available_version_cmd_output)}. Supported versions: 4, 6, 7, 8"
+                f"No supported dotnet version found. Available versions: {', '.join(available_version_cmd_output)}. Supported versions: 4, 6, 7, 8, 9"
             )
         except (FileNotFoundError, subprocess.CalledProcessError):
             try: