bug #2030 Fix: Original Throwable get lost during component render (cuchac)

This PR was squashed before being merged into the 2.x branch.

Discussion
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Fix: Original Throwable get lost during component render

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| Issues        |
| License       | MIT

When non-Exception Throwable is thrown during component rendering, original Throwable is lost together with it's stacktrace. Without stacktrace it is hard to debug the problem. This simple change fixes the problem in the same way as in https://github.com/cuchac/ux/blob/f69b9656f318464253590a6575da65f34262d931/src/TwigComponent/src/Twig/ComponentExtension.php#L127  where `previous: $e` is used instead of  `previous: $e->getPrevious()`

Commits
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89552aa Fix: Original Throwable get lost during component render

Author: kbond

src/TwigComponent/src/Twig/ComponentExtension.php

@@ -120,10 +120,6 @@ private function throwRuntimeError(string $name, \Throwable $e): void
             throw $e;
         }
 
-        if (!($e instanceof \Exception)) {
-            $e = new \Exception($e->getMessage(), $e->getCode(), $e->getPrevious());
-        }
-
-        throw new RuntimeError(\sprintf('Error rendering "%s" component: %s', $name, $e->getMessage()), previous: $e);
+        throw new RuntimeError(\sprintf('Error rendering "%s" component: "%s"', $name, $e->getMessage()), previous: $e);
     }
 }