A one-way movement of INR certainly increases its invoicing flavour amongst the probable beneficiaries. But the true test of a currency of invoice is the country’s macro economic strength. The ease with which the currency and related risks can be hedged would be a key determinant in accessing the product.
If the central bank did not provide that liquidity, a credit crunch would ensue, and that would create a significant downdraft in the economy—in effect, a deflationary shock. Countering that shock requires providing the demanded liquidity until tensions ease, essentially countering a deflationary 3/5  BIS central bankers' speeches  shock with an inflationary policy.