Fix 5.10 compile on Ubuntu 24.04

Specifically Swift 5.10 on Intel on Ubuntu Noble (24.04) has a crazy bug which leads to compilation failures in a #if compiler(>=6.0) block: swiftlang/swift#79285 .

This workaround fixes the compilation by changing the whitespace.

Author: FranzBusch

Sources/Metrics/Metrics.swift

@@ -11,6 +11,9 @@
 // SPDX-License-Identifier: Apache-2.0
 //
 //===----------------------------------------------------------------------===//
+// swift-format-ignore
+// Note: Whitespace changes are used to workaround compiler bug
+// https://github.com/swiftlang/swift/issues/79285
 
 @_exported import CoreMetrics
 import Foundation
@@ -143,8 +146,9 @@ extension Timer {
     public func measure<Result, Failure: Error, Clock: _Concurrency.Clock>(
         clock: Clock = .continuous,
         isolation: isolated (any Actor)? = #isolation,
-        body: () async throws(Failure) -> sending Result
-    ) async throws(Failure) -> sending Result where Clock.Duration == Duration {
+        // DO NOT FIX THE WHITESPACE IN THE NEXT LINE UNTIL 5.10 IS UNSUPPORTED
+        // https://github.com/swiftlang/swift/issues/79285
+        body: () async throws(Failure) -> sending Result ) async throws(Failure) -> sending Result where Clock.Duration == Duration {
         let start = clock.now
         defer {
             self.record(duration: start.duration(to: clock.now))