Increase thread timeout to reduce flakiness.

Taken from upstream:
https://github.com/xbmc/xbmc/commit/574b0182d8b641fd24029f372ebdcccc897123e2

diff --git a/xbmc/threads/test/TestEvent.cpp b/xbmc/threads/test/TestEvent.cpp
index 42fb8c2fc609..40e644c0ed3c 100644
--- a/xbmc/threads/test/TestEvent.cpp
+++ b/xbmc/threads/test/TestEvent.cpp
@@ -484,7 +484,7 @@ TEST(TestEvent, GroupTimedWait)
   EXPECT_TRUE(w3.result == NULL);
 
   // this should end given the wait is for only 50 millis
-  EXPECT_TRUE(waitThread3.timed_join(MILLIS(100)));
+  EXPECT_TRUE(waitThread3.timed_join(MILLIS(200)));
 
   EXPECT_TRUE(!w3.waiting);
   EXPECT_TRUE(w3.result == NULL);
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<tr><td><span title='2022-12-14 22:56:00 +0100'>2022-12-14</span></td><td><a href='/guix/commit/gnu/services/ldap.scm?id=82c511dd5489bd7a2cbcd0313b9f54f9d7f166d2'>gnu: slapd-configuration: Update default for run-dir.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/ldap.scm (slapd-configuration): Update default value for
run-dir to match defaults of 389-ds-base package.
* doc/guix.texi: Update documentation.
</span></span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2022-12-14 20:55:04 +0100'>2022-12-14</span></td><td><a href='/guix/commit/gnu/services/ldap.scm?id=c6f81ff7a6a527b5a14189a2c359b981ddba43bc'>gnu: Add directory-server-service-type.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/ldap.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add it.
* doc/guix.texi (LDAP Services): Document it.
</span></span></td><td>Ricardo Wurmus</td></tr>