std.Build: call handleVerbose2 in runAllowFail

Ensures that all runned command are visible when using `--verbose` flag,
for example `pkg-config` from Step.Compile or `git describe` from build.zig.

Signed-off-by: Eric Joldasov <bratishkaerik@landless-city.net>

lib/std/Build.zig

@@ -1808,6 +1808,7 @@ pub fn runAllowFail(
     child.stderr_behavior = stderr_behavior;
     child.env_map = &b.graph.env_map;
 
+    try Step.handleVerbose2(self, null, child.env_map, argv);
     try child.spawn();
 
     const stdout = child.stdout.?.reader().readAllAlloc(b.allocator, max_output_size) catch {