The $\mpt$ of $\Ls$ compared with previously measured $\mpt$ values of K$^{*0}$, ${\rm \phi}$, ${\rm \Sigma^{*\pm}}$, ${\rm\Xi^{*0}}$ and ${\rm\Omega^-}$ in p--Pb collisions at $\sn$ $\mathrm{=}$ 5.02 TeV as a function of the mean charged-particle multiplicity density $\dnchdeta$, measured in the pseudorapidity range $|\eta_{\rm lab}|