self-hosted wasm linker bug

[Rexicon226]

follow-up on #22488

Apply this diff

diff --git a/test/link/wasm/export-data/build.zig b/test/link/wasm/export-data/build.zig
index 1cddde208d..865017a22f 100644
--- a/test/link/wasm/export-data/build.zig
+++ b/test/link/wasm/export-data/build.zig
@@ -13,9 +13,6 @@ pub fn build(b: *std.Build) void {
         }),
     });
     lib.entry = .disabled;
-    // Disabled to work around the Wasm linker crashing.
-    // Can be reproduced by commenting out the line below.
-    lib.bundle_ubsan_rt = false;
     lib.use_lld = false;
     lib.root_module.export_symbol_names = &.{ "foo", "bar" };

test
└─ zig build-exe lib Debug wasm32-freestanding failure
error: warning(object): unimplemented: element section in /Users/david/Code/zig/test/link/wasm/export-data/.zig-cache/o/00d7fe87c6978366952f114cc1712760/lib.wasm.o null
thread 22727590 panic: attempt to use null value
/Users/david/Code/zig/src/link/Wasm/Object.zig:1358:72: 0x10db77be3 in parse (zig)
        const ptr = wasm.object_table_imports.getPtr(table_import_name).?;
                                                                       ^
/Users/david/Code/zig/src/link/Wasm.zig:3063:36: 0x10db6c54f in parseObject (zig)
    const object = try Object.parse(wasm, file_contents, obj.path, null, wasm.object_host_name, &ss, obj.must_link, gc_sections);
                                   ^
/Users/david/Code/zig/src/link/Wasm.zig:3036:21: 0x10d7e422b in openParseObjectReportingFailure (zig)
    wasm.parseObject(obj) catch |err| {
                    ^
/Users/david/Code/zig/src/link/Wasm.zig:3808:40: 0x10d4caba7 in flushModule (zig)
        openParseObjectReportingFailure(wasm, module_obj_path);
                                       ^
/Users/david/Code/zig/src/link/Wasm.zig:3384:28: 0x10d30811f in flush (zig)
    return wasm.flushModule(arena, tid, prog_node);
                           ^
/Users/david/Code/zig/src/link.zig:833:77: 0x10d1a4fbb in flush (zig)
                return @as(*tag.Type(), @fieldParentPtr("base", base)).flush(arena, tid, prog_node);
                                                                            ^