WESM.gpkg feature ids change over time

[scottyhq]

CO_WestCentral_2019 used to be FID 2409 and after

69359ad#diff-16759f95a0a631b8d2ca37c434c5d2e13bd46e5896c670b3efa2e8f661d80531

is 2412!

[scottyhq]

This is kind of a pain for keeping a secondary index in sync, b/c it would need to be regularly updated:
(went from 2915 entries to 2941 in the last month):

# df[df.workunit_id.isin(inew.difference(iold).values)].workunit
1526    ND_3DEPProcessing_2_D22
1712    ND_3DEPProcessing_3_D22
1939    LA_NortheastDOTD_3_2017
2141    LA_NortheastDOTD_4_2017
2333    ND_3DEPProcessing_6_D22
2679    ND_3DEPProcessing_5_D22
2778      MT_Statewide_P3_3_B21
2786      MT_Statewide_P3_4_B21
2810     CA_SierraNevada_12_B22
2829         WA_NorthEast_2_B22
2831         NY_SE4County_1_A22
2864     CA_SierraNevada_11_B22
2869     CA_SierraNevada_9_2022
2878       MT_StatewideP4_2_B22
2880       MT_StatewideP4_6_B22
2890         UT_WestEast_10_B22
2904         OR_SouthEast_2_D22
2905            NY_Hudson_1_D22
2907        VA_NorthernVA_2_B22
2909         OK_Statewide_2_D22
2912    TX_LowerRioGrande_4_D22
2926        ME_MidCentral_1_B23
2931         CA_FEMALevee_1_D23
2932         AZ_Southwest_3_D23
2939            NV_USFSR4_1_D23
2940         AR_NorthEast_1_D22