Update Mipmaps > Limit import option visibility when intended in the texture importer

Previously, you had to switch to another file and back to the original
file for the option visibility to update.

editor/import/resource_importer_texture.cpp

@@ -238,7 +238,7 @@ void ResourceImporterTexture::get_import_options(const String &p_path, List<Impo
 	r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "compress/hdr_compression", PROPERTY_HINT_ENUM, "Disabled,Opaque Only,Always"), 1));
 	r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "compress/normal_map", PROPERTY_HINT_ENUM, "Detect,Enable,Disabled"), 0));
 	r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "compress/channel_pack", PROPERTY_HINT_ENUM, "sRGB Friendly,Optimized"), 0));
-	r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "mipmaps/generate"), (p_preset == PRESET_3D ? true : false)));
+	r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "mipmaps/generate", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_UPDATE_ALL_IF_MODIFIED), (p_preset == PRESET_3D ? true : false)));
 	r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "mipmaps/limit", PROPERTY_HINT_RANGE, "-1,256"), -1));
 	r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "roughness/mode", PROPERTY_HINT_ENUM, "Detect,Disabled,Red,Green,Blue,Alpha,Gray"), 0));
 	r_options->push_back(ImportOption(PropertyInfo(Variant::STRING, "roughness/src_normal", PROPERTY_HINT_FILE, "*.bmp,*.dds,*.exr,*.jpeg,*.jpg,*.hdr,*.png,*.svg,*.tga,*.webp"), ""));