prefix warning with "Warning:", do not print error inside warning in red

src/poetry/console/commands/install.py

@@ -187,7 +187,7 @@ def handle(self) -> int:
             # No need for an editable install in this case.
             self.line("")
             self.line_error(
-                f"The current project could not be installed: <error>{e}</error>\n"
+                f"Warning: The current project could not be installed: {e}\n"
                 "If you do not want to install the current project"
                 " use <c1>--no-root</c1>.\n"
                 "If you want to use Poetry only for dependency management"