add arg to transformResponse

[phryneas]

as mentioned in #1339

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size-limit report 📦

Path	Size
1. entry point: @reduxjs/toolkit (cjs.production.min.js)	12.23 KB (0%)
1. entry point: @reduxjs/toolkit (esm.js)	10.22 KB (0%)
1. entry point: @reduxjs/toolkit/query (cjs.production.min.js)	20.34 KB (+0.01% 🔺)
1. entry point: @reduxjs/toolkit/query (esm.js)	17.37 KB (+0.02% 🔺)
1. entry point: @reduxjs/toolkit/query/react (cjs.production.min.js)	22.21 KB (+0.01% 🔺)
1. entry point: @reduxjs/toolkit/query/react (esm.js)	19.82 KB (+0.01% 🔺)
2. entry point: @reduxjs/toolkit (without dependencies) (cjs.production.min.js)	5.55 KB (0%)
2. entry point: @reduxjs/toolkit (without dependencies) (esm.js)	5.53 KB (0%)
2. entry point: @reduxjs/toolkit/query (without dependencies) (cjs.production.min.js)	9.2 KB (+0.03% 🔺)
2. entry point: @reduxjs/toolkit/query (without dependencies) (esm.js)	9.58 KB (+0.03% 🔺)
2. entry point: @reduxjs/toolkit/query/react (without dependencies) (cjs.production.min.js)	2.36 KB (0%)
2. entry point: @reduxjs/toolkit/query/react (without dependencies) (esm.js)	2.21 KB (0%)
3. createSlice (esm.js)	5.16 KB (0%)
3. createEntityAdapter (esm.js)	5.83 KB (0%)
3. configureStore (esm.js)	5.83 KB (0%)
3. createApi (esm.js)	15.66 KB (+0.01% 🔺)
3. createApi (react) (esm.js)	18.05 KB (+0.02% 🔺)
3. fetchBaseQuery (esm.js)	10.93 KB (0%)
3. setupListeners (esm.js)	9.8 KB (0%)
3. ApiProvider (esm.js)	16.98 KB (+0.01% 🔺)

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Sandbox	Source
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rsk-github-issues-example	Configuration
@examples-query-react/basic	Configuration
@examples-query-react/advanced	Configuration