fix(core): make CosmosSigningOptions.cosmosSignerConfig partial

[2wheeh]

Background

CosmosSigningOptions.cosmosSignerConfig was typed as full CosmosSignerConfig, but callers may want to only provide DocOptions fields (e.g. gasPrice, encodePublicKey, pubkeyDecoders) without queryClient, which is injected internally by getSigningClient():

interchain-kit/packages/core/src/wallet-manager.ts

Lines 257 to 262 in dcdabc8

	const signerOptions: CosmosSignerConfig = {
	queryClient: await createCosmosQueryClient(rpcEndpoint as string),
	addressPrefix: chain.bech32Prefix,
	chainId: chain.chainId,
	...defaultSignerOptions.cosmosSignerConfig,
	};

Description

Changed cosmosSignerConfig to Partial<CosmosSignerConfig> to match actual usage.