clang-format: re-format for clang-18

clang-format-18 isn't compatible with the clang-format-17 output, so we
need to reformat the code with the latest version.  The way clang-18
handles lambda formatting also changed, so we have made changes to the
organization default style format to better handle lambda formatting.

See I5e08687e696dd240402a2780158664b7113def0e for updated style.
See Iea0776aaa7edd483fa395e23de25ebf5a6288f71 for clang-18 enablement.

Change-Id: I6c62f244ae77c511ecbb62b72964154f465fb590
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/test/source/signal.cpp b/test/source/signal.cpp
index 4c95f3a..f04486b 100644
--- a/test/source/signal.cpp
+++ b/test/source/signal.cpp
@@ -84,11 +84,11 @@
     }
     int completions = 0;
     const struct signalfd_siginfo* return_si;
-    Signal::Callback callback = [&](Signal&,
-                                    const struct signalfd_siginfo* si) {
-        return_si = si;
-        completions++;
-    };
+    Signal::Callback callback =
+        [&](Signal&, const struct signalfd_siginfo* si) {
+            return_si = si;
+            completions++;
+        };
     Signal signal(*event, sig, std::move(callback));
     EXPECT_FALSE(callback);
     EXPECT_NE(&signal, userdata);
@@ -116,10 +116,10 @@
                                           testing::_, nullptr))
         .WillOnce(Return(-EINVAL));
     int completions = 0;
-    Signal::Callback callback = [&completions](Signal&,
-                                               const struct signalfd_siginfo*) {
-        completions++;
-    };
+    Signal::Callback callback =
+        [&completions](Signal&, const struct signalfd_siginfo*) {
+            completions++;
+        };
     EXPECT_THROW(Signal(*event, sig, std::move(callback)), SdEventError);
     EXPECT_TRUE(callback);
     EXPECT_EQ(0, completions);