Improve selection type documentation

- Refine tooltip documentation with clearer information.
- Introduce privacy ranking indicator for intuitive user guidance.
- Adopt a consistent format throughout documentation.
- Switch from emojis to icons to maintain visual uniformity.

src/presentation/assets/icons/lightbulb.svg

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+<!-- Source: Font Awesome 6 --><svg xmlns="http://www.w3.org/2000/svg" height="1em" viewBox="0 0 384 512"><path d="M272 384c9.6-31.9 29.5-59.1 49.2-86.2l0 0c5.2-7.1 10.4-14.2 15.4-21.4c19.8-28.5 31.4-63 31.4-100.3C368 78.8 289.2 0 192 0S16 78.8 16 176c0 37.3 11.6 71.9 31.4 100.3c5 7.2 10.2 14.3 15.4 21.4l0 0c19.8 27.1 39.7 54.4 49.2 86.2H272zM192 512c44.2 0 80-35.8 80-80V416H112v16c0 44.2 35.8 80 80 80zM112 176c0 8.8-7.2 16-16 16s-16-7.2-16-16c0-61.9 50.1-112 112-112c8.8 0 16 7.2 16 16s-7.2 16-16 16c-44.2 0-80 35.8-80 80z"/></svg>

src/presentation/assets/icons/square-check.svg

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+<!-- Source: Font Awesome 6 --><svg xmlns="http://www.w3.org/2000/svg" height="1em" viewBox="0 0 448 512"><path d="M64 32C28.7 32 0 60.7 0 96V416c0 35.3 28.7 64 64 64H384c35.3 0 64-28.7 64-64V96c0-35.3-28.7-64-64-64H64zM337 209L209 337c-9.4 9.4-24.6 9.4-33.9 0l-64-64c-9.4-9.4-9.4-24.6 0-33.9s24.6-9.4 33.9 0l47 47L303 175c9.4-9.4 24.6-9.4 33.9 0s9.4 24.6 0 33.9z"/></svg>

src/presentation/assets/icons/triangle-exclamation.svg

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+<!-- Source: Font Awesome 6 --><svg xmlns="http://www.w3.org/2000/svg" height="1em" viewBox="0 0 512 512"><path d="M256 32c14.2 0 27.3 7.5 34.5 19.8l216 368c7.3 12.4 7.3 27.7 .2 40.1S486.3 480 472 480H40c-14.3 0-27.6-7.7-34.7-20.1s-7-27.8 .2-40.1l216-368C228.7 39.5 241.8 32 256 32zm0 128c-13.3 0-24 10.7-24 24V296c0 13.3 10.7 24 24 24s24-10.7 24-24V184c0-13.3-10.7-24-24-24zm32 224a32 32 0 1 0 -64 0 32 32 0 1 0 64 0z"/></svg>