Fix __PURE__ rollup warning while bundling

[XantreDev]

@preact-signals/utils:build: "/** #__PURE__ */"
@preact-signals/utils:build:
@preact-signals/utils:build: in "src/lib/store/deepSignal.ts" contains an annotation that Rollup cannot interpret due to the position of the comment. The comment will be removed to avoid issues.
@preact-signals/utils:build: https://rollupjs.org/https://rollupjs.org/configuration-options/#pure
@preact-signals/utils:build: D:\Projects\open-source\preact-signals\packages\utils\src\lib\store\deepSignal.ts:21:26
@preact-signals/utils:build: 19:  * @param value - The object to wrap in the deepSignal.
@preact-signals/utils:build: 20:  */