fix: v-t custom directive warning when it will run

[kazupon]

resolve #2056

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@intlify/core

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@intlify/core-base

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@intlify/devtools-types

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@intlify/message-compiler

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petite-vue-i18n

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@intlify/shared

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vue-i18n

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@intlify/vue-i18n-core

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commit: b5a17b2