TOOL-2831 - Update docs for showTestnetFaucet

[kien-ngo]

Problem solved

Short description of the bug fixed or feature added

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PR-Codex overview

This PR updates the ConnectButtonProps to enhance the ConnectButton Details Modal by introducing a link for requesting testnet funds when connected to a testnet. It clarifies the conditions under which this link will appear.

Detailed summary

• Added a note that the "Request Testnet funds" link will only show if faucet links are registered with the chain.
• Updated the example for using ConnectButton to include the detailsModal prop for showing the testnet faucet link.

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[linear]

TOOL-2831 Error using showTestnetFaucet in ConnectButton implementation

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Latest commit: 74b489a

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[kien-ngo]

• TOOL-2831 - Update docs for showTestnetFaucet #5868 👈 (View in Graphite)
• main

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[github-actions]

size-limit report 📦

Path	Size	Loading time (3g)	Running time (snapdragon)	Total time
thirdweb (esm)	45.09 KB (0%)	902 ms (0%)	2.8 s (-26.01% 🔽)	3.7 s
thirdweb (cjs)	110.84 KB (0%)	2.3 s (0%)	6.7 s (+14.4% 🔺)	8.9 s
thirdweb (minimal + tree-shaking)	5.58 KB (0%)	112 ms (0%)	325 ms (-9.35% 🔽)	436 ms
thirdweb/chains (tree-shaking)	506 B (0%)	10 ms (0%)	92 ms (-43.42% 🔽)	102 ms
thirdweb/react (minimal + tree-shaking)	19.12 KB (0%)	383 ms (0%)	527 ms (+3.16% 🔺)	910 ms