Automerge: [lldb-dap] Fix test: TestDAP_server.py (#157924)

See
llvm/llvm-project#156803 (comment)
for full context.

Summary:
* In llvm/llvm-project#156803, we see a builtbot
failure for `TestDAP_server.py` on Debian. Note that macOS and other
Linux distributions (like CentOS, or whatever Linux the [required
buildbot](https://github.com/llvm/llvm-project/actions/runs/17594257911/job/49982560193#logs)
uses) seem to pass the tests.
* In the 3 newly added tests, the most complex test case passed, while
the other easier ones failed.
```
PASS: LLDB (/home/worker/2.0.1/lldb-x86_64-debian/build/bin/clang-x86_64) :: test_connection_timeout_multiple_sessions (TestDAP_server.TestDAP_server.test_connection_timeout_multiple_sessions)
FAIL: LLDB (/home/worker/2.0.1/lldb-x86_64-debian/build/bin/clang-x86_64) :: test_connection_timeout_long_debug_session (TestDAP_server.TestDAP_server.test_connection_timeout_long_debug_session)
FAIL: LLDB (/home/worker/2.0.1/lldb-x86_64-debian/build/bin/clang-x86_64) :: test_connection_timeout_at_server_start (TestDAP_server.TestDAP_server.test_connection_timeout_at_server_start)
```
* The error is that `process.wait(timeout)` timed out during the
teardown of the tests.
* The above suggests that maybe the root cause is that the timeout is
set too strictly (and that maybe the server termination on Debian is
slower than the other Linux distribution for some reason).
* This patch loosens that timeout from 2s to 5s. Let's see if this
works.
* FWIW, I cannot verify the root cause, because I don't have a Debian
machine.

Author: royitaqi

lldb/test/API/tools/lldb-dap/server/TestDAP_server.py

@@ -127,7 +127,7 @@ def test_connection_timeout_at_server_start(self):
         self.start_server(
             connection="listen://localhost:0",
             connection_timeout=1,
-            wait_seconds_for_termination=2,
+            wait_seconds_for_termination=5,
         )
 
     @skipIfWindows
@@ -139,7 +139,7 @@ def test_connection_timeout_long_debug_session(self):
         (_, connection) = self.start_server(
             connection="listen://localhost:0",
             connection_timeout=1,
-            wait_seconds_for_termination=2,
+            wait_seconds_for_termination=5,
         )
         # The connection timeout should not cut off the debug session
         self.run_debug_session(connection, "Alice", 1.5)
@@ -153,7 +153,7 @@ def test_connection_timeout_multiple_sessions(self):
         (_, connection) = self.start_server(
             connection="listen://localhost:0",
             connection_timeout=1,
-            wait_seconds_for_termination=2,
+            wait_seconds_for_termination=5,
         )
         time.sleep(0.5)
         # Should be able to connect to the server.