add optional font inlining to presentation creator

[shellmayr]

Add a description for how to inline fonts into the HTML as an optional feature to the presentation creator

[sentry]

Bug: The documentation for creating offline presentations fails to instruct the removal of the Material Symbols font link, resulting in a build that is not fully self-contained.
_{Severity: MEDIUM}

Suggested Fix

Update Step 3 in offline-fonts.md to explicitly show the removal of both the Rubik and Material Symbols font links. Alternatively, add a note in Step 3 clarifying that the Material Symbols link must also be removed and reference the dedicated section that recommends replacing the font with SVGs or Unicode symbols for a truly offline build.

Prompt for AI Agent

Review the code at the location below. A potential bug has been identified by an AI
agent.
Verify if this is a real issue. If it is, propose a fix; if not, explain why it's not
valid.

Location:
plugins/sentry-skills/skills/presentation-creator/references/offline-fonts.md#L20-L24

Potential issue: The new documentation in `offline-fonts.md` for creating self-contained
presentations is incomplete. The instructions in Step 3, titled "Remove Google Fonts
links," only show the removal of the `Rubik` font link. It fails to instruct the user to
also remove the link for `Material Symbols`. If a user follows the steps literally, the
resulting presentation will not be fully self-contained as claimed. It will still
attempt to make a network request to Google Fonts to load the `Material Symbols` font,
which will fail in an offline environment, causing icons to not render correctly.

_{Did we get this right? 👍 / 👎 to inform future reviews.}