i18n(ja): add sessions.mdx

[morinokami]

Description (required)

Translate sessions.mdx into Japanese.

Related issues & labels (optional)

• Suggested label: i18n

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Tracked Files

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ja/guides/sessions.mdx	Localization changed, will be marked as complete.

Warnings reference

Icon	Description
🔄️	The source for this localization has been updated since the creation of this pull request, make sure all changes in the source have been applied.

[sarah11918]

@morinokami - This is only a code snippet update. Any reason this can't be merged? 😄

[morinokami]

@sarah11918 Thanks! I was waiting for a review, but since this is a code only change, I’ll go ahead and merge it. With this, all the Japanese-related PRs should be completed 🙌