fix(bundler): some sourcemap generation bugs (#11344)

Co-authored-by: paperdave <paperdave@users.noreply.github.com>
Co-authored-by: Meghan Denny <meghan@bun.sh>
Co-authored-by: nektro <nektro@users.noreply.github.com>
Co-authored-by: Jarred Sumner <jarred@jarredsumner.com>
Co-authored-by: Le Michel <95184938+Ptitet@users.noreply.github.com>
Co-authored-by: Дмитрий Заводской <zawodskoj2@gmail.com>
Co-authored-by: Dylan Conway <35280289+dylan-conway@users.noreply.github.com>
Co-authored-by: HUMORCE <humorce@outlook.com>
Co-authored-by: huseeiin <122984423+huseeiin@users.noreply.github.com>

src/bun.js/javascript.zig

@@ -190,8 +190,10 @@ pub const SavedSourceMap = struct {
     pub const MissingSourceMapNoteInfo = struct {
         pub var storage: bun.PathBuffer = undefined;
         pub var path: ?[]const u8 = null;
+        pub var seen_invalid = false;
 
         pub fn print() void {
+            if (seen_invalid) return;
             if (path) |note| {
                 Output.note(
                     "missing sourcemaps for {s}",