Change Details

[ENG-6577](https://linear.app/comm/issue/ENG-6577/make-sure-we-use-short-one-time-keys-format). 1. Remove `getOneTimeKeyArray` function. 2. Updates `getOneTimeKeyArray` callsites to `getOneTimeKeyValues`. 3. Remove parsing by offsets from `createSessionAsInitializer`. 4. Remove the `keyIndex` argument - it's not used, Identity returns only one one-time key. 5. Rename `oneTimeKeys` -> `oneTimeKey`. 6. Remove calling `getOneTimeKeyValuesFromBlob` - we now expect short keys in session creators. 7. Move parsing long-format to `getOlmSessionInitializationData`. The `get_olm_session_initialization_data` endpoint returns keys in long format, so parse it immediately after receiving and in the rest of the codebase we assume we operate on short format. I decided to not update `get_olm_session_initialization_data` to return short keys as it will be deprecated soon so we can avoid handling backward compatibility - old clients still expect long format.

[ENG-6577](https://linear.app/comm/issue/ENG-6577/make-sure-we-use-short-one-time-keys-format). 1. Remove `getOneTimeKeyArray` function. 2. Updates `getOneTimeKeyArray` callsites to `getOneTimeKeyValues`. 3. Remove parsing by offsets from `createSessionAsInitializer`. 4. Remove the `keyIndex` argument - it's not used, Identity returns only one one-time key. 5. Rename `oneTimeKeys` -> `oneTimeKey`. 6. Remove calling `getOneTimeKeyValuesFromBlob` - we now expect short keys in session creators. 7. Move parsing long-format to `getOlmSessionInitializationData`. The `get_olm_session_initialization_data` endpoint returns keys in long format, so parse it immediately after receiving and in the rest of the codebase we assume we operate on short format. I decided to not update `get_olm_session_initialization_data` to return short keys as it will be deprecated soon so we can avoid handling backward compatibility - old clients still expect long format. Adding all three reviewers as blocking - all worked on code related to session creation and keys, to make sure we are all on the same page about one-time keys usage.

[ENG-6577](https://linear.app/comm/issue/ENG-6577/make-sure-we-use-short-one-time-keys-format). 1. Remove `getOneTimeKeyArray` function. 2. Updates `getOneTimeKeyArray` callsites to `getOneTimeKeyValues`. 3. Remove parsing by offsets from `createSessionAsInitializer`. 4. Remove the `keyIndex` argument - it's not used, Identity returns only one one-time key. 5. Rename `oneTimeKeys` -> `oneTimeKey`. 6. Remove calling `getOneTimeKeyValuesFromBlob` - we now expect short keys in session creators. 7. Move parsing long-format to `getOlmSessionInitializationData`. The `get_olm_session_initialization_data` endpoint returns keys in long format, so parse it immediately after receiving and in the rest of the codebase we assume we operate on short format. I decided to not update `get_olm_session_initialization_data` to return short keys as it will be deprecated soon so we can avoid handling backward compatibility - old clients still expect long format. Adding all three reviewers as blocking - all worked on code related to session creation and keys, to make sure we are all on the same page about one-time keys usage.