fix(post): show the user name without overlaping

[CedrikNikita]

Note

Low Risk
Primarily UI/layout changes in feed items plus a small ResizeObserver hook; limited to presentation but could cause minor responsive regressions on edge screen sizes/browsers.

Overview
Improves feed item header rendering to avoid name/address/timestamp overlap by introducing a width-aware compact layout for ReplyToFeedItem and TokenCreatedFeedItem.

Adds useCompactFeedItemLayout (via ResizeObserver with a window-resize fallback) and uses it to switch avatar sizes, adjust right padding when the on-chain button is present, and hide the BlockchainInfoPopover label/reduce padding in compact mode. Unnamed-user headers are consolidated into a single unnamedHeader branch with compact vs non-compact variants.

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[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

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